Ubuntu 8.04 LTS gateway problems
 

8.04 LTS Default gateway problems

When my machine boots my route command looks like below, and I can ping my gateway, but not the Internet.

Destination Gateway Genmask Flags Metric Ref Use Iface
xxx.xxx.xxx.128 * 255.255.255.224 U 0 0 0 eth0

The only way i can get to the Internet is to manually run route add default gw xxx.xxx.xxx.129 after which my route looks like this.

Destination Gateway Genmask Flags Metric Ref Use Iface
204.244.122.128 * 255.255.255.224 U 0 0 0 eth0
default 204.244.122.129 0.0.0.0 UG 0 0 0 eth0

However in my /etc/network/interfaces I clearly have my gateway defined as xxx.xxx.xxx.129

# The loopback network interface
auto lo eth0
iface lo inet loopback

# The primary network interface
iface eth0 inet static
address xxx.xxx.xxx.132
netmask 255.255.255.224
broadcast xxx.xxx.xxx.159
network xxx.xxx.xxx.128
gateway xxx.xxx.xxx.129
# up route add default gw 204.244.122.129

Also when i do a /etc/init.d/networking restart i get some
errors but Internet access continues to work see below.

* Reconfiguring network interfaces... Moving from lan,netstart to if-pre-up,eth0,lan
SIOCADDRT: No such process
Failed to bring up eth0.

Please help as this machine is located in a datacenter so access is limited

First your lack of using code tags makes your message hard to read. An output of ifconfig (using code tags) would help us a lot in identifying what's happening after you boot. Another ifconfig (between code tags) would be nice if we can see how it looks after you manually get the network up and running.

A complete route output between code tags would help also. You only show two lines. Maybe two lines are all that you get. But it'd appear somewhat more complete and identifiable if your output at least included the first line header.

Your /etc/network/interfaces configuration probably isn't being activated because you have a missing "auto eth0". That might be the only problem.

-- L. James

--
L. D. James
ljames@apollo3.com
www.apollo3.com/~ljames

Thank you for your reply and advice about code tags too here are the additional infos in the format that you have requested.

This is the complete output of the route and ifconfig commands respectively these have not been truncated there are only 2 lines in my routing table. NOTE this is while the system is working after running the manual
# add route default gw 204.244.122.129 command

The output of my ifconfig and route command while the system is not working is more difficult as it is remote and i have no copy paste capabilities while the network is down. However i have done my best to capture this information below as far as i can tell the ifconfig is the same as is the first and only line in the routing table.

Also my interfaces file did have an entry for auto eth0 however it was at the top of the file after auto lo. I have since moved it to the more conventional location again see the code below.

PS just some additional information my ISP for this server is using vlans and the system works perfectly with a windows based test laptop set to the same static ip/gateway as above.

I am still having gateway problems, and have tried messing with lots of settings including metrics. Nothing seems to work someone has to be able to help me out here? Please ?