On 18 February 2013 16:32, Ian Campbell <i...@hellion.org.uk> wrote: > On Mon, 2013-02-18 at 13:51 +0000, Gavin wrote: > > > <stumped! /> > > If the kernel hasn't changed and you are 100% sure the network > configuration before and after the reboot is the same then so am I. > > All I can suggest is to reinstall the previous version of Xen. >
Thanks very much for all your assistance Ian, the problem was with the network. We introduced a second switch into the stack and it seems like it was our bond interface to the switch that caused this particular issue. We were using bond mode 5 since that works for us elsewhere and did not think that this could be the problem since we were seeing the arp-replies reach the host bridge interface. As per Xen recommendations I tried mode 7 but that too did not work. Once configured to use bond mode 1 (active-backup) this all started working again. Apologies for the run-around, the false accusations and also the cross-posting, have a few hours before going live with this platform and was under a fair amount of pressure. All good now!! :) Regards, Gavin > >