[SOLVED] Failed to access the Internet after disabling networkmanager

Question

How can I get access to the Internet after networkmanager is down? I disabled the networkmanager and uncommented the static IP settings I used to use and reboot, but I'm still unable to get access to the Internet. (Failed to ping 8.8.8.8, which means the problem isn't DNS.)
Here's how this happened:
I used to get access to the Internet on my ArchLinux machine by setting up a static IP address in /etc/rc.conf. This worked fine. Then one day I needed to do something difficult without a networkmanager, so I installed the network-manager-applet via pacman, which worked fine as well, until one day after I ran pacman -Syu and rebooted, many programs, including the network-manager-applet are unable to work, saying the system is missing libpng14.so. My workstation was connected to a wireless connection at that time (the same one before my last pacman -Syu and reboot), and I tried to run pacman -Syu again and the network seemed to still be working. So I didn't take it as a big problem at that time.
But now, after I brought it to work (where I connect to the Internet via a wired network and a static IP), I found myself unable to get access again to the Internet, even after I removed networkmanager from the DAEMONS in rc.conf, and uncommented the static IP settings that used to work. And It's not DNS problems since I'm unable to ping 8.8.8.8 or any other known IPs directly (it says destination host is unreachable).
Here's my rc.conf files, the IP address and gateway stuff couldn't be wrong so hope you don't mind I use something like XX.XX.XX.XX instead:
LOCALE="en-US.UTF-8"
DAEMON-LOCALE="no"
HARDWARECLOCK="localtime"
TIMEZONE="Asia/Shanghai"
KEYMAP="us"
CONSOLEFONT=
CONSOLEMAP=
USECOLOR="yes"
MODULES=(wl)
UDEV_TIMEOUT=30
USEDMRAID="no"
USEBTRFS="no"
USELVM="no"
HOSTNAME="lastland"
interface=eth0
address=XX.XX.XX.XX
netmask=255.255.255.0
broadcast=XX.XX.XX.255
gateway=XX.XX.XX.XX
NETWORK_PERSIST="no"
DAEMONS = (syslog-ng network crond dbus kdm alsa)
Last edited by lastland (2012-02-08 15:39:10)

Answer 1

ewaller wrote:
It would be helpful if you could share the output of ip addr
It might show the data you have obfuscated, so either check it to see if it is rational, obfuscate the bits you don't want to share, or trust us
Of course, if the address starts with 10, 172, or 192, it does not really matter if you share it with us as it is a private network address anyway.
Also, the output if ip route will be helpful.  Also, can you ping the address you think is the address of your machine from your own machine?
edit: typo
Oh thank you for the hint! The ip addr command really helps me figure out that my eth0 MAC address is not the right one. Though I don't know how it happens, I succeed to get back to the Internet and reply this post via my ArchLinux workstation. Thank you!