[SOLVED] My DHCP doesn't want IP addresses offered by the router
I use NetworkManager and I always have to manually set my IP address, because my DHCP doesn't accept IP addresses offered by my router.
If I go to Settings -> Network, disconnect from wi-fi and change IPv4 setting from "Manual" to "Automatic (DHCP)", then it will keep trying to reconnect forever.
I wanted to look at DHCP logs but I cant find them (`/var/log/dhcpd.log` does not exist on my system)
If I run `sudo dhcpcd` (after killing the process with `sudo kill $(pidof dhcpcd)`) I get the following:
dhcpcd[3137]: version 6.0.5 starting
dhcpcd[3137]: enp7s0: waiting for carrier
dhcpcd[3137]: wlp8s0: soliciting an IPv6 router
dhcpcd[3137]: wlp8s0: rebinding lease of 192.168.1.3
dhcpcd[3137]: wlp8s0: carrier lost
dhcpcd[3137]: wlp8s0: carrier acquired
dhcpcd[3137]: wlp8s0: soliciting an IPv6 router
dhcpcd[3137]: wlp8s0: rebinding lease of 192.168.1.3
dhcpcd[3137]: control command: /usr/bin/dhcpcd -B -K -L -G -c /usr/lib/networkmanager/nm-dhcp-client.action wlp8s0
dhcpcd[3137]: wlp8s0: leased 192.168.1.3 for 86400 seconds
dhcpcd[3137]: wlp8s0: adding host route to 192.168.1.3 via 127.0.0.1
dhcpcd[3137]: wlp8s0: adding route to 192.168.1.0/24
dhcpcd[3137]: wlp8s0: adding default route via 192.168.1.1
dhcpcd[3137]: forked to background, child pid 3206
"carrier lost, carrier acquired" happened because I turned off and then I turned back on my wi-fi.
"wlp8s0" is my wireless interface, while "enp7s0" is my ethernet interface.
Can someone point me to the correct direction to make DHCP work properly?
Last edited by wil93 (2013-10-06 14:08:17)
Raynman wrote:
You can see NM logs (including dhcpcd messages) using
# journalctl -u NetworkManager.service -b
(the -b limits output to the current boot).
Thanks. I tried running the command, but the output is empty:
-- Logs begin at Mon 2013-07-08 00:35:44 CEST, end at Sun 2013-09-29 14:30:06 CEST. --
I also tried removing `-b` with no luck (same output).
Awebb wrote:1. Post the lspci part, where we can see your wifi chip.
2. I had this problem last week after linux 3.11 hit stable. I had to delete around 50 unused leases from my router to make it work again.
This is the output of `lspci` command:
[...other stuff...]
07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 07)
08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)
(I reported the last two lines)
By the way, as far as I can recall, I had this problem since I switched from netctl to NetworkManager. Also, it happens not only with my router (so it's definitely not a router issue).
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