Networkmanager PPTP DNS issues

I have Arch Linux on my business laptop and use it to connect to Windows PPTP servers at the office. I use a cable connection and get my address by DHCP (172.23.0.0/16 range). The VPN connection is set up successfully, I specified the gateway, username, domain name, company DNS servers and 10.32.0.0/16 route (office network range). When connected, I can use all servers on my company's network by address AND by name.
The problem however, is that I can't use DNS of the network I connect from anymore (172.23.0.0/16).
When connected, networkmanager rewrites the resolv.conf like this and I have both DNS servers in my resolv.conf file, like I think it should be. But it seems like only the first DNS server (company network) is used for DNS queries and that the local DNS servers are not queried when the first DNS server can't fulfill the request.
Any help would be appreciated. If you would need more information, I would be glad to give it to you

Gcool wrote:Do you have the "networkmanager-vpnc" package installed?
Yes, I do.
Last edited by Gringoire (2012-03-23 15:59:34)

Similar Messages

[Solved] NetworkManager-pptp VPN not working after update to 0.9.10

Hello,
I have a PPTP VPN set up and it's been working for a long time. However, after I updated last night to networkmanager-0.9.10, it is no longer able to connect to the remote network. I can activate the VPN connection, enter my password, but after a short period of time, the connection reports: "Error: Connection activation failed: the VPN service returned invalid configuration." As I mentioned before, this VPN was working right before the update and I didn't change the configuration on either my computer or the destination network so I'm pretty sure that this is something to do with the update. I'm wondering if anybody else has run into this problem and if they've been able to find a solution. I've been searching all over these forums and the internet for some hours now and I haven't found anything yet. I'm hoping that somebody might be able to point me in the right direction or maybe know of something that might have changed with the new update.
Here is my VPN configuration (using NetworkManager-PPTP. I've also obscured the public IP address):
[connection]
id=MyVPN
uuid=fe6e6265-1a79-4a69-b6d1-8b47e9d4c948
type=vpn
permissions=user:greyseal96:;
autoconnect=false
timestamp=1408950986
[vpn]
service-type=org.freedesktop.NetworkManager.pptp
gateway=192.168.146.114
require-mppe=yes
user=greyseal96
password-flags=3
[ipv6]
method=auto
[ipv4]
method=auto
route1=10.17.0.0/16,10.17.1.1,1
never-default=true
Here are my logs during the time that I tried to connect:
Aug 24 23:44:15 MyArchBox NetworkManager[578]: <info> Starting VPN service 'pptp'...
Aug 24 23:44:15 MyArchBox NetworkManager[578]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 1938
Aug 24 23:44:15 MyArchBox NetworkManager[578]: <info> VPN service 'pptp' appeared; activating connections
Aug 24 23:44:21 MyArchBox NetworkManager[578]: <info> VPN connection 'MyVPN' (ConnectInteractive) reply received.
Aug 24 23:44:21 MyArchBox NetworkManager[578]: <info> VPN plugin state changed: starting (3)
Aug 24 23:44:21 MyArchBox NetworkManager[578]: ** Message: pppd started with pid 1945
Aug 24 23:44:21 MyArchBox NetworkManager[578]: <info> VPN connection 'MyVPN' (Connect) reply received.
Aug 24 23:44:21 MyArchBox pppd[1945]: Plugin /usr/lib/pppd/2.4.6/nm-pptp-pppd-plugin.so loaded.
Aug 24 23:44:21 MyArchBox NetworkManager[578]: Plugin /usr/lib/pppd/2.4.6/nm-pptp-pppd-plugin.so loaded.
Aug 24 23:44:21 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (plugin_init): initializing
Aug 24 23:44:21 MyArchBox pppd[1945]: pppd 2.4.6 started by root, uid 0
Aug 24 23:44:21 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection'
Aug 24 23:44:21 MyArchBox pppd[1945]: Using interface ppp0
Aug 24 23:44:21 MyArchBox pppd[1945]: Connect: ppp0 <--> /dev/pts/2
Aug 24 23:44:21 MyArchBox NetworkManager[578]: Using interface ppp0
Aug 24 23:44:21 MyArchBox NetworkManager[578]: Connect: ppp0 <--> /dev/pts/2
Aug 24 23:44:21 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
Aug 24 23:44:21 MyArchBox NetworkManager[578]: <info> (ppp0): new Generic device (driver: 'unknown' ifindex: 10)
Aug 24 23:44:21 MyArchBox NetworkManager[578]: <info> (ppp0): exported as /org/freedesktop/NetworkManager/Devices/9
Aug 24 23:44:21 MyArchBox pptp[1947]: nm-pptp-service-1938 log[main:pptp.c:333]: The synchronous pptp option is NOT activated
Aug 24 23:44:21 MyArchBox pptp[1954]: nm-pptp-service-1938 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 1 'Start-Control-Connection-Request'
Aug 24 23:44:21 MyArchBox pptp[1954]: nm-pptp-service-1938 log[ctrlp_disp:pptp_ctrl.c:758]: Received Start Control Connection Reply
Aug 24 23:44:21 MyArchBox pptp[1954]: nm-pptp-service-1938 log[ctrlp_disp:pptp_ctrl.c:792]: Client connection established.
Aug 24 23:44:22 MyArchBox pptp[1954]: nm-pptp-service-1938 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 7 'Outgoing-Call-Request'
Aug 24 23:44:22 MyArchBox pptp[1954]: nm-pptp-service-1938 log[ctrlp_disp:pptp_ctrl.c:877]: Received Outgoing Call Reply.
Aug 24 23:44:22 MyArchBox pptp[1954]: nm-pptp-service-1938 log[ctrlp_disp:pptp_ctrl.c:916]: Outgoing call established (call ID 0, peer's call ID 50048).
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 6 / phase 'authenticate'
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (get_credentials): passwd-hook, requesting credentials...
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (get_credentials): got credentials from NetworkManager-pptp
Aug 24 23:44:25 MyArchBox pppd[1945]: CHAP authentication succeeded
Aug 24 23:44:25 MyArchBox NetworkManager[578]: CHAP authentication succeeded
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 8 / phase 'network'
Aug 24 23:44:25 MyArchBox pppd[1945]: MPPE 128-bit stateless compression enabled
Aug 24 23:44:25 MyArchBox NetworkManager[578]: MPPE 128-bit stateless compression enabled
Aug 24 23:44:25 MyArchBox pppd[1945]: Cannot determine ethernet address for proxy ARP
Aug 24 23:44:25 MyArchBox pppd[1945]: local IP address 10.17.10.3
Aug 24 23:44:25 MyArchBox pppd[1945]: remote IP address 10.17.10.1
Aug 24 23:44:25 MyArchBox pppd[1945]: primary DNS address 10.17.2.22
Aug 24 23:44:25 MyArchBox pppd[1945]: secondary DNS address 10.17.2.23
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> VPN connection 'MyVPN' (IP4 Config Get) reply received from old-style plugin.
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> VPN Gateway: 192.168.146.114
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Tunnel Device: ppp0
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> IPv4 configuration:
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Internal Address: 10.17.10.3
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Internal Prefix: 32
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Internal Point-to-Point Address: 10.17.10.1
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Maximum Segment Size (MSS): 0
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Static Route: 10.17.0.0/16 Next Hop: 10.17.1.1
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Forbid Default Route: yes
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Internal DNS: 10.17.2.22
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> Internal DNS: 10.17.2.23
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> DNS Domain: '(none)'
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <info> No IPv6 configuration
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <error> [1408949065.481618] [platform/nm-linux-platform.c:1716] add_object(): Netlink error adding 10.17.0.0/16 via 10.17.1.1 dev ppp0 metric 1 mss 0 src user: Unspecific failure
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <warn> VPN connection 'MyVPN' did not receive valid IP config information.
Aug 24 23:44:25 MyArchBox NetworkManager[578]: Cannot determine ethernet address for proxy ARP
Aug 24 23:44:25 MyArchBox NetworkManager[578]: local IP address 10.17.10.3
Aug 24 23:44:25 MyArchBox NetworkManager[578]: remote IP address 10.17.10.1
Aug 24 23:44:25 MyArchBox NetworkManager[578]: primary DNS address 10.17.2.22
Aug 24 23:44:25 MyArchBox NetworkManager[578]: secondary DNS address 10.17.2.23
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 9 / phase 'running'
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_ip_up): ip-up event
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_ip_up): sending Ip4Config to NetworkManager-pptp...
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: PPTP service (IP Config Get) reply received.
Aug 24 23:44:25 MyArchBox pppd[1945]: Terminating on signal 15
Aug 24 23:44:25 MyArchBox pppd[1945]: Modem hangup
Aug 24 23:44:25 MyArchBox pptp[1954]: nm-pptp-service-1938 log[callmgr_main:pptp_callmgr.c:245]: Closing connection (unhandled)
Aug 24 23:44:25 MyArchBox pptp[1954]: nm-pptp-service-1938 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 12 'Call-Clear-Request'
Aug 24 23:44:25 MyArchBox pptp[1954]: nm-pptp-service-1938 log[call_callback:pptp_callmgr.c:84]: Closing connection (call state)
Aug 24 23:44:25 MyArchBox pppd[1945]: Connect time 0.0 minutes.
Aug 24 23:44:25 MyArchBox pppd[1945]: Sent 0 bytes, received 0 bytes.
Aug 24 23:44:25 MyArchBox pppd[1945]: MPPE disabled
Aug 24 23:44:25 MyArchBox pppd[1945]: Connection terminated.
Aug 24 23:44:25 MyArchBox dbus[579]: [system] Rejected send message, 10 matched rules; type="error", sender=":1.51" (uid=0 pid=1938 comm="/usr/lib/networkmanager/nm-pptp-service ") interface="(unset)" member="(unset)" error name="org.freedesktop.DBus.Error.UnknownMethod" requested_reply="0" destination=":1.52" (uid=0 pid=1945 comm="/sbin/pppd pty /sbin/pptp 192.168.146.114 --nolaunc")
Aug 24 23:44:25 MyArchBox dbus[579]: [system] Rejected send message, 10 matched rules; type="error", sender=":1.51" (uid=0 pid=1938 comm="/usr/lib/networkmanager/nm-pptp-service ") interface="(unset)" member="(unset)" error name="org.freedesktop.DBus.Error.UnknownMethod" requested_reply="0" destination=":1.52" (uid=0 pid=1945 comm="/sbin/pppd pty /sbin/pptp 192.168.146.114 --nolaunc")
Aug 24 23:44:25 MyArchBox dbus[579]: [system] Rejected send message, 10 matched rules; type="error", sender=":1.51" (uid=0 pid=1938 comm="/usr/lib/networkmanager/nm-pptp-service ") interface="(unset)" member="(unset)" error name="org.freedesktop.DBus.Error.UnknownMethod" requested_reply="0" destination=":1.52" (uid=0 pid=1945 comm="/sbin/pppd pty /sbin/pptp 192.168.146.114 --nolaunc")
Aug 24 23:44:25 MyArchBox dbus[579]: [system] Rejected send message, 10 matched rules; type="error", sender=":1.51" (uid=0 pid=1938 comm="/usr/lib/networkmanager/nm-pptp-service ") interface="(unset)" member="(unset)" error name="org.freedesktop.DBus.Error.UnknownMethod" requested_reply="0" destination=":1.52" (uid=0 pid=1945 comm="/sbin/pppd pty /sbin/pptp 192.168.146.114 --nolaunc")
Aug 24 23:44:25 MyArchBox dbus[579]: [system] Rejected send message, 10 matched rules; type="error", sender=":1.51" (uid=0 pid=1938 comm="/usr/lib/networkmanager/nm-pptp-service ") interface="(unset)" member="(unset)" error name="org.freedesktop.DBus.Error.UnknownMethod" requested_reply="0" destination=":1.52" (uid=0 pid=1945 comm="/sbin/pppd pty /sbin/pptp 192.168.146.114 --nolaunc")
Aug 24 23:44:25 MyArchBox NetworkManager[578]: inet 10.17.0.0/16 table main
Aug 24 23:44:25 MyArchBox NetworkManager[578]: priority 0x1 protocol static
Aug 24 23:44:25 MyArchBox NetworkManager[578]: nexthop via 10.17.1.1 dev 10
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <error> [1408949065.487073] [platform/nm-linux-platform.c:2252] link_change(): Netlink error changing link 10: <DOWN> mtu 0 (1) driver 'unknown' udi '/sys/devices/virtual/net/ppp0': No such device
Aug 24 23:44:25 MyArchBox NetworkManager[578]: <error> [1408949065.487153] [platform/nm-linux-platform.c:1777] delete_object(): Netlink error deleting 10.17.10.3/32 lft forever pref forever lifetime 1862-0[4294967295,4294967295] dev ppp0 src kernel: No such device (-31)
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: Terminated ppp daemon with PID 1945.
Aug 24 23:44:25 MyArchBox kernel: Loading kernel module for a network device with CAP_SYS_MODULE (deprecated). Use CAP_NET_ADMIN and alias netdev- instead.
Aug 24 23:44:25 MyArchBox NetworkManager[578]: Terminating on signal 15
Aug 24 23:44:25 MyArchBox NetworkManager[578]: Modem hangup
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 8 / phase 'network'
Aug 24 23:44:25 MyArchBox NetworkManager[578]: Connect time 0.0 minutes.
Aug 24 23:44:25 MyArchBox NetworkManager[578]: Sent 0 bytes, received 0 bytes.
Aug 24 23:44:25 MyArchBox NetworkManager[578]: MPPE disabled
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 10 / phase 'terminate'
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 11 / phase 'disconnect'
Aug 24 23:44:25 MyArchBox NetworkManager[578]: Connection terminated.
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 1 / phase 'dead'
Aug 24 23:44:25 MyArchBox dbus[579]: [system] Rejected send message, 10 matched rules; type="error", sender=":1.51" (uid=0 pid=1938 comm="/usr/lib/networkmanager/nm-pptp-service ") interface="(unset)" member="(unset)" error name="org.freedesktop.DBus.Error.UnknownMethod" requested_reply="0" destination=":1.52" (uid=0 pid=1945 comm="/sbin/pppd pty /sbin/pptp 192.168.146.114 --nolaunc")
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** Message: nm-pptp-ppp-plugin: (nm_exit_notify): cleaning up
Aug 24 23:44:25 MyArchBox pppd[1945]: Exit.
Aug 24 23:44:25 MyArchBox NetworkManager[578]: ** (nm-pptp-service:1938): WARNING **: pppd exited with error code 16
Aug 24 23:44:45 MyArchBox NetworkManager[578]: <info> VPN service 'pptp' disappeared
If you've gotten this far, thank you for taking the time to read through all this! Any help that you can give would be much appreciated.
Last edited by greyseal96 (2014-08-27 15:20:02)

Hmm, not sure about the 3.16 series kernel, but I found that when I upgraded to kernel 3.18 the PPTP VPN also stopped working. This time, though, it was because, for some reason, there was a change in kernel 3.18 where the firewall kernel modules necessary for the VPN don't get loaded so the firewall won't allow some of the PPTP traffic from the remote side back in. Since the firewall is stateful, these modules need to be loaded so that the firewall can know that the incoming PPTP traffic from the remote side is part of an existing connection. Here's what my network manager logs looked like:
NetworkManager[619]: <info> Starting VPN service 'pptp'...
NetworkManager[619]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 31139
NetworkManager[619]: <info> VPN service 'pptp' appeared; activating connections
NetworkManager[619]: <info> VPN connection 'MyVPN' (ConnectInteractive) reply received.
NetworkManager[619]: <info> VPN plugin state changed: starting (3)
NetworkManager[619]: ** Message: pppd started with pid 31148
NetworkManager[619]: <info> VPN connection 'MyVPN' (Connect) reply received.
pppd[31148]: Plugin /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
NetworkManager[619]: Plugin /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
NetworkManager[619]: ** Message: nm-pptp-ppp-plugin: (plugin_init): initializing
pppd[31148]: pppd 2.4.7 started by root, uid 0
NetworkManager[619]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection'
pppd[31148]: Using interface ppp0
pppd[31148]: Connect: ppp0 <--> /dev/pts/5
NetworkManager[619]: Using interface ppp0
NetworkManager[619]: Connect: ppp0 <--> /dev/pts/5
NetworkManager[619]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
NetworkManager[619]: <info> (ppp0): new Generic device (driver: 'unknown' ifindex: 7)
NetworkManager[619]: <info> (ppp0): exported as /org/freedesktop/NetworkManager/Devices/6
pptp[31150]: nm-pptp-service-31139 log[main:pptp.c:333]: The synchronous pptp option is NOT activated
pptp[31157]: nm-pptp-service-31139 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 1 'Start-Control-Connection-Request'
pptp[31157]: nm-pptp-service-31139 log[ctrlp_disp:pptp_ctrl.c:758]: Received Start Control Connection Reply
pptp[31157]: nm-pptp-service-31139 log[ctrlp_disp:pptp_ctrl.c:792]: Client connection established.
pptp[31157]: nm-pptp-service-31139 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 7 'Outgoing-Call-Request'
pptp[31157]: nm-pptp-service-31139 log[ctrlp_disp:pptp_ctrl.c:877]: Received Outgoing Call Reply.
pptp[31157]: nm-pptp-service-31139 log[ctrlp_disp:pptp_ctrl.c:916]: Outgoing call established (call ID 0, peer's call ID 25344).
pppd[31148]: LCP: timeout sending Config-Requests <===HERE IS WHERE THE CONNECTION FAILS BECAUSE THE MODULES AREN'T LOADED.
pppd[31148]: Connection terminated.
NetworkManager[619]: LCP: timeout sending Config-Requests
NetworkManager[619]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 11 / phase 'disconnect'
NetworkManager[619]: Connection terminated.
NetworkManager[619]: <warn> VPN plugin failed: connect-failed (1)
NetworkManager[619]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 1 / phase 'dead'
pppd[31148]: Modem hangup
pppd[31148]: Exit.
NetworkManager[619]: <warn> VPN plugin failed: connect-failed (1)
NetworkManager[619]: Modem hangup
NetworkManager[619]: ** Message: nm-pptp-ppp-plugin: (nm_exit_notify): cleaning up
NetworkManager[619]: <warn> VPN plugin failed: connect-failed (1)
NetworkManager[619]: <info> VPN plugin state changed: stopped (6)
NetworkManager[619]: <info> VPN plugin state change reason: unknown (0)
NetworkManager[619]: <warn> error disconnecting VPN: Could not process the request because no VPN connection was active.
NetworkManager[619]: ** (nm-pptp-service:31139): WARNING **: pppd exited with error code 16
NetworkManager[619]: <info> VPN service 'pptp' disappeared
To fix this, I had to add a file to the /etc/modules-load.d directory to have the modules loaded into the kernel at boot. I just created a file called netfilter.conf and put the following in it:
nf_nat_pptp
nf_conntrack_pptp
nf_conntrack_proto_gre
Not sure if this addresses your problem or not, but maybe it's worth a look.

Deployed in Kuwait - VPNclient configuring w/o networkmanager (pptp)

My laptop connects to a wireless router in the barracks and Kuwait has quite a few filters on what we can access.
I've purchased an account with an online VPN provider and have been able to connect via windows7 and via networkmanager-pptp in Arch.
The problem is, I typically use wicd. This is for many reasons, but here it's almost necessary since there are multiple routers broadcasting on different channels but all with the same essid; so networkmanager cannot differentiate between them.
Anyway, I know the vpn works but I can't get the configs right without networkmanager.
I've done it according to the wiki and various other posts I read here and elsewhere and I can connect but it doesn't seem to "take". My ip doesn't change (as seen by what is my ip) and sites are still blocked. And it get's stranger. Once connected to the vpn I cannot load any pages except for google / igoogle. Google chat with my wife works fine, but I'm unable to ping google.com?
And running poff gives me this:
sudo poff myCon
/usr/bin/poff: I could not find a pppd process for provider 'myCon'. None stopped.
here are my connection settings from /peers: http://pastebin.com/pui3rTwv
here are my settings from options.pptp: http://pastebin.com/Lbm6UyMt
and my chap-secrets looks like this:
<my user name> <vpn server ip> <my password> *
And here's a terminal output of "pon myCon debug dump logfd 2 nodetach": http://pastebin.com/M79JJp4C
As always, thanks for the help.

actually, you can still do that
1) add static routes for all your vpn servers ip addresses, e.g, route add europe.myvpn.com gw <my isp's default gateway> dev <my device>
for ease of use, add all your routes to a bash script, and then run it from rc.local
2) before connecting to the vpn, you need to disable your default route through eth0/etc , but doing so, you will not be able to connect at all as your myCon config file uses a dns name in the pty parameter instead of the vpn servers ip address, either change it in the config file, or add all those dns-ip mappings to /etc/hosts
3) create multiple ppp config files with different pty parameters, and you can then execute them using a normal bash script containing, pon myEuropeVPN, pon myAsiaVPN, etc.
Last edited by Sin.citadel (2010-06-10 18:14:23)

DNS Issues with Time Capsule - DNS Proxy periodically dies

hi all .... looking for some suggestions
I have a time capsule 1TB, connected to a linksys adsl modem in bridge mode, with the TC acting as DHCP server for my local clients. In the PPPoE settings I also enter the primary and secondary addresses for DNS that my ISP supplied.
I am able to successfully connect to the internet, and all clients successfully pick up an IP address, and each client picks up the TC as the DNS proxy. Everything works perfectly as it should.
Usually once per day, there seems to be a slight hickup with the internet connection (hard to tell whether I am losing the PPPoE or some other issue). When this happens, the PPPoE connection remains active, as I am able to access anything on the internet from an IP level. However, the DNS proxy service on the TC seems to die and as a result, all internet browsing fails. If I reboot the TC, everything comes back to normal. If I dont reboot, the only way to get browsing working is to manually enter the DNS IP address from ISP into the client PCs. However, this is a manual fix that I should not have to perform.
Looking for advice and guidance. Seems like a bug but I cant tell. If I was able to set the DHCP server to pass out the ISP supplied addresses that would also work, but I cant.

Just got off the phone with support for this very same problem. DNS Proxy is definitely dying in the TC, looks like a firmware issue to me.
This is the 3rd TC I'm on. First was a 500GB, had this problem, replaced it under warranty at Apple's direction, replacement did the same, just upgraded this weekend to 1GB, and same issue still. All on 7.3.2 firmware.
TC 1TB, PPPoE to my ISP, ISP's DNS Servers listed in the PPPoE config in the TC.
When a host gets DHCP from the TC the only DNS returned is the TC itself, since it proxies the ISP DNS servers.
Once every day or two, the DNS proxy dies. local network works, and I can add my ISP's DNS addresses in my host config and I have DNS again, but this is definitely something dying in the DNS proxy in the TC.
Just for kicks trying to switch from my ISP's DNS servers to OpenDNS now since someone said that worked for them, but I am not hopeful... I don't see this as a host DNS issues at all.
The dead proxy is very clear:
$ nslookup apple.com. 192.168.1.1 # that's the TC
Server: 192.168.1.1
Address: 192.168.1.1#53
** server can't find apple.com: SERVFAIL
$ nslookup apple.com. 208.67.222.222 # that's OpenDNS
Server: 208.67.222.222
Address: 208.67.222.222#53
Non-authoritative answer:
Name: apple.com
Address: 17.149.160.49
I replaced a linksys router with the TC and am kind of unhappy that a $500 router dies every couple of days. My cheapo Linksys router never needed to be restarted, it only ever got rebooted once every year or so when the house lost power long enough for the UPS to run out of battery.
Help us out here Apple, I replaced a $50 router with a $500 because I like the flavor of your kool aid, and this thing dies every day or two. Even if you can't fix why the proxy is dying every couple of days, can you please at least update the firmware to maybe restart the proxy if it quits working?

ITunes not responding due to DNS issues?

iTunes 11.1.0.126 on Windows 7, never had a problem in the past 5 years... iTunes runs 24/7 on this machine. It has been running for days since my last reboot, maybe a week. I was listening to a podcast, then went into the store to search for an artist, clicked on an album, listened to preview, back button, different album, preview, back button, different album, etc then one time when I clicked the back button iTunes became unresponsive until I had to kill it.
I can no longer open iTunes, it always opens as a transparent window with a border and is immediately "Not responding" in task manager. Same thing happens in safe mode. I tried rebooting too.
Around this time I started noticing other problems with my internet connection. Seems like my provider is having DNS issues because certain websites hosted on the east coast won't load, but west coast websites will (I am on the west coast). I tried loading these websites on my phone through cell data and they worked, so I figured my provider is having problems.
Now I'm wondering if iTunes calls home or tries to make some sort of connection when it loads, regardless of safe mode or not, and this causes the application to hang immediately. Does anyone know anything about this, or how I might be able to get the iTunes application to run again?

Well, it wasn't a DNS issue, it was a routing issue that affected ISP customers in half of the country. https://community.shaw.ca/thread/9284?start=0&tstart=0
I can confirm that iTunes will now open and is functional. It seems that if the application can't access some internet resource immediately when it launches it will immediately lock up and never come back! No offline mode??!?!

Internet DHCP/DNS issues with WRT1900ac

I've had a WRT1900ac now for about 2 weeks and the problems seem to be escalating. Need help. And yes, I've already read dozens of threads about these issues and nothing seems to be working.
Most of the problems seem to be centered around this DHCP/DNS issue that so many have been reporting.
First, the symptoms:
Galaxy S4 phones when connected via wifi have some apps that don't update (facebook and google play)
Some computers (both Win 7) will connect to the network just fine, both wired and wireless - but won't be able to get to the internet
I've spent the last 2-3 days of my life reading forums and trying all sorts of things to get this to work properly (like my old router) and I'm still stuck. Some things I've tried:
Firmware is up-to-date (latest version: 1.1.8.164461)
Manually assigned static DNS in router config settings (connectivity -> local network) to various combinations including the router address, 8.8.8.8, 8.8.4.4, 75.75.75.75, 75.75.76.76 (I have comcast), OpenDNS addresses, etc. I read that the router address is not needed, so I stopped including it.
I manually assigned IPs and DNS on the Galaxy S4 phones and that seemed to work... but also seems unnecessary.
I've reserved DHCP addresses on the computers in question, that didn't seem to work, I also manually set DNS on one of the comupters (can't on the other... long story/not my computer) and that worked for a while and then stopped working.
The only way to get one of the computers on the internet now is to turn on the guest network (even though the computer is hard wired to the router), connect, and then the wired network works. No clue why this is, but my guess is that it needs the guest network for DNS, then it fails back over to the wired network. Once that happens, I can actually turn off the wifi on the computer and everything works great... until I reboot. Key point: I can't change any settings on that box other than entering in SSID/passphrase info for the wireless connection. I can connect to the regular (non-Guest) wifi just fine - I just can't ever get to the internet.
I've tried massaging DHCP settings on the router until I'm blue in the face - Static DNS, reserving DHCP addresses, hell I even put one of the computers in the DMZ to see if that would work and it still can't connect to the internet (it's worth noting that with my old router, Linksys WRT310N, the setup was literally plug-and-play - no hassle with any of this).
I've tried countless router reboots, factory resets, turning off my modem and router for 2+ minutes, and nothing is working.
I even read somewhere that if you modify your DHCP settings at all that the WRT1900ac stops doing DNS properly and breaks, so I even tried several "hard" factory resets and used all the default DHCP/DNS settings. And it worked... for a few hours.
Seriously, I'm at my wit's end. I'm out a lot of money on this thing and it's been one headache after another. Please help.

I think for most people its a bad idea to hold out that hope, lol. It seems like a great piece of hardware but if you really need a router and don't want to have to 'play' with it, its probably not a good choice. I have an EA6900 that I am very happy with but it has the same restrictions as far as DNS and I really hate the idea that I am forced to use the smartwifi portal. I would really like for them to give me a choice of the old gui or the new one and let ME decide. Lots of routers to choose from out there now and new ones seem to be coming out all the time so do some reading and see if something suits you better. Good luck!

[SOLVED] Greetings... and DNS issues... (why is it so slow?)

Hey everybody!
My name is Stephen. I'm new to Arch (hence I'm posting in the newb forum). A bit of background: I'm a CS major in the good 'ole US of A. I used Debian/Ubuntu for 2 years before now. I actually installed Arch just yesterday, so today is my second day of usage. Why do I want to switch from Ubuntu? Several reasons, but they can all be summed up thusly: I want to tinker with and understand how my machine works. I don't want to interface with a blackbox that just "works." Arch seems to be geared towards what I want.
And I've been learning alot, haha. Which I why I am now here to ask for help.
I originally installed Arch at school. Everything was great. Then I took my laptop home and I found out something was wrong. Pacman took an extra 5-15 secs before each download started, but once the download started, I got normal speeds. I observed a similar behavior in my web browsers I tried (Firefox/Surf). No matter what I do, this behavior persists. I suspect this is a DNS issue, and thus I have tried the follow methods of correction so far.
1) Reinstalling to a default configuration.
2) Disabling IPV6.
3) Screwing around with etc/hosts, etc/resolv.conf, and etc/dhcpcd.conf (though I probably did something wrong. Also, I'm not sure how to force Arch to accept my changes after modifying these files.)
I also read somewhere that using HTTP mirrors works better for pacman, but I already was using an HTTP mirror anyway, so I knew that couldn't be the problem.
I have not tried DNS caching yet. However, given that every other machine in the house runs fine, I suspect it is my configuration that is wrong. Does anybody know how I can pinpoint this as DNS for sure? And if so, how I can fix it? Thanks for all your time/help!
Here are some config files/snippets of interest. Most of this should be straight from a basic Arch install.
etc/resolv.conf
# Generated by dhcpcd from eth0
# /etc/resolv.conf.head can replace this line
domain domain.actdsltmp
nameserver 192.168.0.1
nameserver 216.165.129.157
# /etc/resolv.conf.tail can replace this line
Note that 192.168.0.1 is the address of my router on my LAN. I believe the second address is a DNS provided by my ISP.
etc/hosts
#<ip-address> <hostname.domain.org> <hostname>
127.0.0.1 localhost.localdomain localhost moebius
::1 localhost.localdomain localhost
etc/rc.conf snippet
HOSTNAME="moebius"
eth0="dhcp"
INTERFACES=(eth0)
# Routes to start at boot-up (in this order)
# Declare each route then list in ROUTES
# - prefix an entry in ROUTES with a ! to disable it
gateway="default gw 192.168.0.1"
ROUTES=(!gateway)
Last edited by sskeirik (2011-03-14 23:21:19)

Output of 'dig google.com a'
; <<>> DiG 9.7.3 <<>> google.com a
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52741
;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;google.com. IN A
;; ANSWER SECTION:
google.com. 10000 IN A 74.125.65.104
;; Query time: 17 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Mon Mar 14 14:09:45 2011
;; MSG SIZE rcvd: 44
Output of 'dig @8.8.8.8 google.com a'
; <<>> DiG 9.7.3 <<>> @8.8.8.8 google.com a
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43373
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;google.com. IN A
;; ANSWER SECTION:
google.com. 229 IN A 74.125.45.105
google.com. 229 IN A 74.125.45.99
google.com. 229 IN A 74.125.45.103
google.com. 229 IN A 74.125.45.147
google.com. 229 IN A 74.125.45.106
google.com. 229 IN A 74.125.45.104
;; Query time: 74 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Mon Mar 14 14:10:37 2011
;; MSG SIZE rcvd: 124

Linksys WRTP54G DNS issue

I have reviewed and tried HOURS of suggestions on this site regarding WI-FI DNS issue ie. "can't find the server" message. This appears to be Router model problem/resolution. Does anyone know the specific fix to get the ITouch to work with an linksys WRTP54G Router. General comments and fixes are not needed, only the one specific for this router. Thanks.

Don't give up on the iPod Touch. It's one of the most remarkable devices ever invented.
Your router routes IP traffic. That's all you need. Your iPod should work with any router. Somewhere, there a configuration setting that is not right.
There is one other possibility, and that's that your ISP is doing something funny like using a proxy server. Unlikely but possible.
You need to attack this systematically. Like has been suggested, narrow down if it is a connectivity or a DNS issue. If you can get to a site by its IP address, then you have a DNS issue. If you cannot, then it is something set wrong elsewhere.
Possibilities:
- MAC filtering (you have ruled this out)
- Encryption (you have ruled this out)
- Is your router not giving out enough IP addresses? If you set the limit to 2 and you have 3 computers, someone will lose out.
- Is your router correctly picking up its settings from your ISP (DHCP), or have you hardcoded some or all of it? Does your (working) PC have some of the missing bits hardcoded - for example, if your router doesn't have its DNS settings, but your IP settings on the PC have them hardcoded, the PC will work, but the iPod won't - unless of course you hard code them on the iPod as well
- Have you inadvertently coded something into your router like a static route, a filter, , or configured a DMZ that is conflicting with the DHCP address that your iPod is getting?
- Have you (or someone in your house) configured some access restrictions on the router, maybe for another PC in the house, like a child's PC?
If all of this is confusing, or something is really screwed up, you could always start form scratch, as if you just bought the router. There is a way to reset it to factory defaults (I believe holding the hidden reset button for a long time), then set it up correctly for your ISP again, and it should work for all computers, iPods, etc.
There is always the possibility that the Vonage firmware is somehow interfering. Do you use the Vonage features? You could always put in a more standard firmware.
Bottom line, it is far more likely that this is a setting on your router than the fault of the iPod. The iPod is just an every day IP device, and should work with just about everything. Do not give up on the iPod.

Windows 2008r2 cluster dns issue

We are running GW 8.0.2 not hot patches. System is running on a windows 2008r2 2 node cluster. When we failover the gwia from node 1 to node 2 we can no longer send email to the internet. We receive just fine, also imap and pop connections are working. We have checked firewall settings and they are the same for both nodes. We get 450 hosts unknown errors for all email going out. We think this is a dns issue, but can't find where the problem may be. We have checked the registry dns nameserver entries on both nodes and they match.
Thanks,
Bill

On the GWIA, is the bind exclusive set on the addressing tab?
The GWIA will send on the primary address of the box unless this box
is checked - but it will listen on all IP addresses (this inbound will
work but recieve will not)
T
On Fri, 01 Apr 2011 12:38:04 GMT, [email protected]: wrote:
>We are running GW 8.0.2 not hot patches. System is running on a windows 2008r2 2 node cluster. When we failover the gwia from node 1 to node 2 we can no longer send email to the internet. We receive just fine, also imap and pop connections are working. We have checked firewall settings and they are the same for both nodes. We get 450 hosts unknown errors for all email going out. We think this is a dns issue, but can't find where the problem may be. We have checked the registry dns nameserver entries on both nodes and they match.
>
>Thanks,
>Bill

Windows 2012 RDS on hyperV - DNS issue

Strange issue, whilst fiddeling arround with some certificates on the connection broker and eventualy rolling back the snapshot I was unable to contact my RD session host.
When I try to connect through RD Web Access it gives me an untrusted certificate (which is correct) and after accepting this it seems to hang in a loop, just trying to connect for ever.
Looking at the CB I found some DNS issue;
Event 8014, DNS Client Events
The system failed to register pointer (PTR) resource records (RRs) for network adapter with settings:..... (correct settings)
The reason the system could not register these RRs during the update request was because of a system problem. You can manually retry DNS registration
So I ran a ipconfig /registerdns but that gives me the same error.
I removed the connection broker from the domain and added it again. Upon moving it to a workgroup the entry on the DNS server was removed, when adding it back into the domain it appeared again. So it kind of works.
What I noticed, after removing it from the domain and adding it again, the RDP connection failed to find the server but didnt try to connect indefinatly. Once I ran ipconfig /registerdns I was back to the beginning, just trying to connect and nothing happens.
So it had some sort of effect.
I'm still unable to setup a connection to my session hosts.
Anyone??

Hi ,
Maybe you can get the accurate assistance from RDS forum :
http://social.technet.microsoft.com/Forums/en-US/home?forum=winserverTS&filter=alltypes&sort=lastpostdesc
Best Regards
Elton Ji
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

4g dns issue

I have been having this issue for three wewks now. Got a new HTC m8. Worked great
Then it did some updates. Before my email was working via mail app and my hosting company.
after update it always has a connection timeout and will not get mail but ONLY on data network
Works fine on WiFi
So its not a settings issue
After a lot of time and energy with my hosting company it is clear it's a dns issue but you can't change dns servers on data?? So I cant get emails while on data which is the whole reason I have this phone
Verizon tech support is useless and pretend (or worse aren't pretending) they don't know what dns is
Please help!!

Unfortunately I have I have already tried third party apps, safe mode, reboots, etc ….
This is not an issue with the mail server, or email software.
The issue is 100% everytime when using over data, and after doing PING and traceroute
testing it is a specific DNS issue not on the part of my hosting company, but rather on Verizon’s side.
The tech support rep seemed to play dumb, or weren’t playing, when I told them it was a DNS issue they didn’t seem to know even what I was talking about.
Works FINE on Wifi.
Data network only.
I would change my DNS server, but doesn’t seem possible on Data Network??

Internet connections have trouble "grabbing on": is this a DNS issue?

Setup: late 2009 iMac, Mountain Lion 10.8.3, using Wifi through an Airport Extreme. A Windows laptop, two iPhones, and an iPad all use the Wifi with no problems at all.
On the iMac: I suspect it's a DNS issue, although I don't know how to confirm that for all the issues. Often, in Safari, the blue bar will progress a bit and get nowhere - maybe a few minutes later the site will appear. Repeatedly hitting refresh seems to be a faster way of reaching the site. Chrome often tells me "DNS lookup failed": once again, refreshing several times will usually get me to the site.
The issue comes and goes, and has been doing so for the past few weeks I think. It's not as if I've lost the internet connection - I always get the connection, but sometimes it takes a while. It doesn't seem to be time-based: one minute fine, next minute a problem, next minute fine.
I live in Taiwan: this issue MAY be less serious with Taiwanese websites (just now I opened a .tw site instantly, while bbc.co.uk is hanging), but it seems to happen with everything.
But the problems aren't just in browsers: in iTunes, when refreshing podcasts, the behavior is similar: the little rotating arrows can keep going forever, as if no connection is being made at that particular moment. Ditto when downloading a podcast: it sits at nothing downloaded, often until I hit pause and resume a few times, at which point it downloads with good speed. Similar when refreshing NetNewsWire, and Twitter, and Mail. Do DNS issues also happen with iTunes and RSS? (Sorry if that's a dumb question - I'm way out of my depth here, and hadn't even heard of DNS until a couple of days ago.)
Results from Speedtest.net are consistently good (download in the range of 40 Mbps, upload in the range of 10 Mbps, ping 7ms) - once I can actually get to the website, which as with all other websites, can sometimes involve repeated hangs and hits of refresh/reload. Note that there has never been a hang when actually trying to test with Speedtest (just when getting to the site): that points to DNS issues as well, right?
The Wifi bar indicator at the top of the screen is always at full strength.
I've tried things mentioned in different threads here, and also at this page...
http://apple.stackexchange.com/questions/26616/dns-not-resolving-on-mac-os
... but so far nothing seems to help.
Can anyone advise on what the problem actually is, and how I can go about fixing it? Thanks in advance!

Hmm. Maybe this has been resolved now - thanks!
First step: I checked the Network / Wifi Advanced / DNS, and found two DNS servers listed: I just reversed the order of the two, and after clicking "Apply", nothing changed. Still the same issue.
Second step: looked on the iPad, Settings / Wi-Fi, and found the DNS listed there: and then I added that same number (10.0.1.1 - the iPhone has the same DNS) to the DNS server list on my iMac, at the top of the list. For the moment, everything is working very well, including far faster iTunes Podcast Refresh than I've seen in ages.
I'll check back in later to confirm the problem has indeed gone away, and I'm not just having a good ten minutes.
Where would those DNS Servers have come from? Does my ISP somehow automatically install them, or did I type them in back in the mists of time?

DNS issues Infinity 2

So, over the last few days I have seen a steady increase in "page not found" errors. The websites involved seem to be fairly random.
in simple terms, some URLs are resolved to a page and others are not.
ive rebooted the Homehub and modem, and this provides some temporary respite before the problem recurs.
i read elsewhere on the forums that some people are affected by similar probleparticularly rely on the EA online games, but wanted to flag that the issue is more prevalent.
anyone else getting issues or just me?
cheers

Been having DNS issues as well the last few days. Very frustrating when I need to submit coursework online for a deadline, yet can't access my Uni's servers. Strange thing is, it's intermittent and only seems to affect one device on my WiFi at a time. First it was my laptop, while my phone, 2nd laptop, Xbox and flatmate's laptop were working perfectly. Once I got my laptop working, my flatmate's DNS failed as he tried to submit the same coursework assignment. Today everything is working apart from my phone. There doesn't seem to be any obvious link as to what's causing it...

DNS Issues with Hyper-V 2012 R2 VDI Pooled Desktop Deployment

Good afternoon all!
We are running a POC VDI deployment on a Nutanix system, and I am having a DNS issue. I would appreciate some help trying to figure this out. Two situations that are causing issues that I can see:
1. VMs go into a saved state if not being used: This in itself is not an issue, and I see it as a way to save resources not being used; however, if a VM is saved for a few days, the DHCP address often gets reassigned. Now if users are connecting, and that
saved VM with the stale address is called to wake up, the VM is not found.
2. Recreating the pool after updating the golden image: This is the bigger issue. After a couple days of running smoothly, I was asked by my pilot users to add Firefox. I installed it and recreated all the VMs in the pool. When this happened, they all got
new IPs, but the old DNS records were not updated. This made the broker unable to find a single VM in the pool. I could not ping a single one.
Has anybody else run into these DNS issues with a VDI deployment? If so, what did you do to resolve it? If not, have any ideas on what is going on here?
Thank you in advance!
Eric

Hi Eric,
As per my research, I can say that the default behavior. When we will recreate the VM it will change the IP address dynamically. But from your description it seems the DNS record is not getting update and due to that you can’t find your VM with hostname or
IP. But for this you can set one option under DNS server with which DNS record can update the new IP address. The option you need to set is “Dynamic updates>Nonsecure and Secure” under general properties in sites. You can check below snap.
Hope it helps!
Thanks.
Dharmesh Solanki
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

So my airport extreme recently had some nat/dns issue and in the airport utility displayed a warning about it and to correct it. I wasn't sure what to do so i pressed the resolve icon and now my guest network is not working.

So my airport extreme recently had some nat/dns issue and in the airport utility displayed a warning about it and to correct it. I wasn't sure what to do so i pressed the resolve icon and now my guest network is not working.

Anytime you change networking hardware, it is always a good idea to perform a complete power recycle of your networking components.
I would recommend that you do the following as a minimum:
Power-down the modem, AirPort base station, and computer(s).
Disconnect the AirPort base station from the Internet broadband modem.
While all of the devices are powered-down, perform a "factory default" reset on the base station. This will get it back to its "out-of-the-box" configuration and make setting it up much easier, especially if you use the "Assist me" process within the AirPort Utility. (ref: Resetting an AirPort Base Station or Time Capsule)
After the base station resets, go ahead and power it back down.
Reconnect the AirPort base station to the Internet broadband modem. For the Extreme and Time Capsule, be sure to connect the cable to the base station's WAN (circle-of-dots) port.
Power-up the modem; wait at least 10-15 minutes to allow it adequate time to initialize.
Power-up the AirPort base station; wait at least 5-10 minutes. Note: The AirPort's status light may continue to flash amber after it has intialized. That is because, there may be some additional configuration items necessary, like setting up wireless security, before the overall setup is completed to get a green status.
Power-up your computer(s).
In this basic configuration, the AirPort base station will broadcast an unsecured wireless network with a Network Name (SSID) of Apple Network NNNNNN. Network clients, connected to the base station either by wire or wireless, should now be able to access the Internet through the ISP's modem. Once Internet connectivity has been verified, you can use the AirPort Utility to configure the base station for wireless security and any other desired options. Please post back your results.

Networkmanager PPTP DNS issues

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