[CentOS-virt] Xen domU default gateway missing/ARP table full
dharmachris at gmail.com
Thu Nov 19 16:12:14 UTC 2009
I think Pasi's on to something there, I bet the GATEWAY command in
ifcfg-eth0 is mistyped or has a syntax error. In the interem, however, a
better hack might be to move the route statement from rc.local, which only
runs at boot, to /etc/sysconfig/network-scripts/route-eth0 . That will
enable the network service to restart or the eth0 interface to downup
without removing the default route.
On Thu, Nov 19, 2009 at 8:04 AM, Pasi Kärkkäinen <pasik at iki.fi> wrote:
> On Thu, Nov 19, 2009 at 10:03:05AM -0500, Ken Bass wrote:
> > Pasi Kärkkäinen wrote:
> > >
> > > I usually specify the default gateway in
> > > /etc/sysconfig/network-scripts/ifcfg-eth0 and it works just fine.
> > >
> > >
> > Actually, I tried putting the GATEWAY in the specific ifcfg-eth0, as
> > well as the global /etc/sysconfig/network and it seems to be ignored.
> > Of course things 'appear' to work just fine, but the route that is setup
> > default * 0.0.0.0 U 0 0 0
> > INSTEAD OF:
> > default router.example.com 0.0.0.0 UG 0 0
> 0 eth0
> > The former seems to cause all arp entries to be queried and cached. The
> latter works correctly.
> > Both 'appear to work'. Does the route on your domU look like the second
> Yes, the routing table is correct for my domUs.
> I have never noticed/seen GATEWAY getting ignored..
> Maybe your netmask is wrong, so the GATEWAY IP is unreachable?
> -- Pasi
> CentOS-virt mailing list
> CentOS-virt at centos.org
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