Mailing List Archive: Secondary IP's not working

Hello,

I'm working with a centos4 guest os and am having some trouble with
assigning multiple IP's to the guest. In the guest machine I have
created the proper entries in /etc/sysconfig/network-scripts to bring
the network up. Once booted I have a setup like this:

eth0 - 1.1.1.1
eth0:1 - 1.1.1.2

Now the problem is I can access the first IP from the outside world
without a problem. But the second IP on eth0:1 does not work, when I try
accessing it I get the domain0 machine instead of the guest. What I
tried doing next is taking down eth0 and assigning 1.1.1.2 to it like so:

ifconfig eth0 down
ifconfig eth0 1.1.1.2 up

I still could not access the IP. But if I initiate an outgoing
connection (ie ping a domain) then immediately it starts working. So my
question is how can I get several public IP's working while booting the
guest? The guest configuration looks like this:

kernel = "/boot/vmlinuz-2.6.11.10-xenU"
memory = 512
name = "guest"
nics = 1
cpu_weight=5
vif = ['vifname=vps17519'];
disk = [
'file:/opt/xen/vps17519/disk,sda1,w','file:/opt/xen/vps17519/swap,sda2,w' ]
root = "/dev/sda1 ro"

I start the domain by issueing this command:

xm create guest.cfg

Any help would be appreciated.

-Mike

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Hi Michael,

I think you should post some more infos, like output of ifconfig, route
-n, brctl show and maybe iptables for dom0 and domU to understand the
network settings better.

Regards,
Mario

Michael Warner schrieb:

> Hello,
>
> I'm working with a centos4 guest os and am having some trouble with
> assigning multiple IP's to the guest. In the guest machine I have
> created the proper entries in /etc/sysconfig/network-scripts to bring
> the network up. Once booted I have a setup like this:
>
> eth0 - 1.1.1.1
> eth0:1 - 1.1.1.2
>
> Now the problem is I can access the first IP from the outside world
> without a problem. But the second IP on eth0:1 does not work, when I
> try accessing it I get the domain0 machine instead of the guest. What
> I tried doing next is taking down eth0 and assigning 1.1.1.2 to it
> like so:
>
> ifconfig eth0 down
> ifconfig eth0 1.1.1.2 up
>
> I still could not access the IP. But if I initiate an outgoing
> connection (ie ping a domain) then immediately it starts working. So
> my question is how can I get several public IP's working while booting
> the guest? The guest configuration looks like this:
>
> kernel = "/boot/vmlinuz-2.6.11.10-xenU"
> memory = 512
> name = "guest"
> nics = 1
> cpu_weight=5
> vif = ['vifname=vps17519'];
> disk = [
> 'file:/opt/xen/vps17519/disk,sda1,w','file:/opt/xen/vps17519/swap,sda2,w'
> ]
> root = "/dev/sda1 ro"
>
> I start the domain by issueing this command:
>
> xm create guest.cfg
>
> Any help would be appreciated.
>
> -Mike
>
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>

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