Xen - Networking doesn't come up in Dom0

Sh4d0w · n00b Joined: 26 Nov 2003 Posts: 28

Soo, I've racked my brain trying to figure out what's going on here. When I start up xend it doesn't bring up eth0 or copy the mac address from eth0 -> peth0 like it should.

I've got net.eth0 not coming up on startup like the wiki says.

Also, the entire machine crashes when I do a reboot. Right after mounting /dev it says "Disabling IRQ #16" and hangs.

Ifcfg before:

Sh4d0w · n00b Joined: 26 Nov 2003 Posts: 28

Fixed!

This seems to be due to a bug in the network-bridge script on line 72:
addr_pfx=`ip addr show dev eth0 | sed -n 's/^ *inet $.*$ [^ ]*$/\1/p'`

On a friend's box (gentoo) it returns: 192.168.0.50/24
On my box it returns: 192.168.1.21/24 brd 192.168.1.255 scope link inet6 fe80::2e0:81ff:fe28:4bd9/64 scope link

This causes line 83: ip addr add ${addr_pfx} dev $1
to fail

I've disabled ipv6 as a workaround since I don't need it and so far everything seems to be running properly.

Also, the wiki says that you should have eth0 not coming up on startup, this is WRONG.

Reported this bug to xen: http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1142

paperdrip · n00b Joined: 17 Jan 2008 Posts: 1

Hello,

I am also experiencing a similar issue, can you kindly tell on how do u disable ipv6?

Many thanks!
ronnie

[Edit] : I recompile the kernel with IPV6 taken out, but still I can't seems to connect to the internet in my DOM0.

Sh4d0w · n00b Joined: 26 Nov 2003 Posts: 28

kwalo · n00b Joined: 21 Feb 2007 Posts: 20 Location: Poland

I had the same problem. Network was down, when I started xen-bridge. However, If you bring it up by hand, it works well.

Here's the workround:
Add the following to your /etc/conf.d/local.start

Petronios · Posted: Wed Feb 13, 2008 4:11 am Post subject: something like this?!

galahad7 · n00b Joined: 18 Mar 2003 Posts: 50

I've just set up a 64 bit Xen 3.2 system with IPv6. I found there was no dom0 networking same as the folks above.

Shut down eth0 manually and assigned the address manually as described by kwalo, and hey presto networking. Thanks kwalo!

I tried modifying the bridge script as per Petronius but it hasn't worked for me. I'm not using IPv6 so I tried changing

kwalo · n00b Joined: 21 Feb 2007 Posts: 20 Location: Poland

I have 64 bit system too and that patch didn't work for me either. This is what I did:

qriff · n00b Joined: 04 Dec 2003 Posts: 73

For the love of god.

Next time the issue involves a wiki topic then how about mentioning it there too...

Except if we want to prioritize common forum browsing skills.

The following did fix the problem, if you followed the wiki-instructions then remember to restore your original network config.