Multiple IPs

Your second IP looks like it's being blocked by a firewall.

Ah, of course!

I think I know what to do now.

Thanks.

No, I don't. :-(

I don't think I have a firewall configured:

# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

This is what I've configured:

# cat ifcfg-eth0:0
DEVICE=eth0:0
BOOTPROTO=none
ONBOOT=yes
IPADDR=64.22.103.92
NETMASK=255.255.255.0

Any suggestions?

Try changing eth0:0 to eth0:1

I've not seen 0:0 used before (but it may be valid). I use 0:1

I had it running as eth0:1, but I changed to to :0. I've changed it back now. Still works locally, but not remotely.

Here's the output from ifconfig:

# ifconfig
eth0      Link encap:Ethernet  HWaddr FE:FD:40:16:67:0A
          inet addr:64.22.103.10  Bcast:64.22.103.255  Mask:255.255.255.0
          inet6 addr: fe80::fcfd:40ff:fe16:670a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2696115 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2742679 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:531381736 (506.7 MiB)  TX bytes:1622071325 (1.5 GiB)
          Interrupt:5

eth0:1    Link encap:Ethernet  HWaddr FE:FD:40:16:67:0A
          inet addr:64.22.103.92  Bcast:64.22.103.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:5

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:64841 errors:0 dropped:0 overruns:0 frame:0
          TX packets:64841 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:7901846 (7.5 MiB)  TX bytes:7901846 (7.5 MiB)

I'd appreciate any suggestions as to how I can diagnose the problem.

Thanks,

James

I just have to ask… have you rebooted your linode since you purchased the additional IP?

It won't work until you do. (The IP can't be routed to your UML instance on the fly while it's running)

Thanks, that's done the trick!

It might be a good idea to add that to the Wiki entry.

I have edited it now. Someone more expert than me might want to check it.

Thanks again.

FWIW I couldn't get that to work on my debian box.

> RTNETLINK answers: Invalid argument

Meh.

I had the same problem, and again a reboot solved it. Thanks!

I just edited into the "Multiple IPs" article on the wiki a note about rebooting. This also worked to solve a similarly mysterious problem with my linode not being able to get its second IP working; after a reboot, everything worked fine.

I added this note under the Debian / Ubuntu section; if this applies to other distros as well, somebody please promote that warning upwards in the article.