[Xen-users] Interesting networking problem (network is unreachable)

["Morten W. Petersen" <morten@xxxxxxxxxxxxxx>]

Hi,

I have an interesting networking problem, an IP-address works
in the host domain, but doesn't work in the guest domain.  The
server is located at a co-location facility.

If I configure the IP address in the host domain, like so:

ifconfig eth0:0 83.143.83.193 netmask 255.255.255.248 up

I can ping the IP-address from home.  The output from route
is like this:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
83.143.83.192   *               255.255.255.248 U     0      0        0 eth0
localnet        *               255.255.255.248 U     0      0        0 eth0
default         83.143.83.121   0.0.0.0         UG    0      0        0 eth0

However, the IP-address does not work when it is running
in a guest domain.  The Xen configuration says

vif = [ 'mac=00:16:3E:00:00:01, bridge=xenbr0, ip=83.143.83.193']

and the /etc/network/interfaces file in the guest domain says

auto lo eth0

iface lo inet loopback

# The primary network interface
#allow-hotplug eth0
iface eth0 inet static
       address 83.143.83.193
       netmask 255.255.255.248
       gateway 83.143.83.121
       # dns-* options are implemented by the resolvconf package, if 
installed
       dns-nameservers 193.67.79.39
       dns-search nidelven-it.no

and the output from route on the guest domain is

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
83.143.83.192   *               255.255.255.248 U     0      0        0 eth0

when I try to ping and outside host from the guest domain,
the message "connect: Network is unreachable" appears.

Any ideas what's wrong?

Thanks,

Morten

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users