Virtual Instance (XenServer) Network Config Disappears After Restore of Physical Instance Backup

Restored physical instance system config to fresh virtual install and now have no network connection. I'm able to log into the virtual instance console and manually set the IP addr with 'ifconfig eth3 192.168.0.99 netmask 255.255.255.0' but the network config vanishes after a few seconds.

[Edit]

I'm able to assign IP addresses to eth0, eth1, and eth2, and ping all three, but the network config of eth3 still vanishes after a few seconds and I cannot connect to webadmin on any of the assigned IP addresses.

[Solved]

I believe the config for eth3 wasn't sticking because it is my WAN interface and configured to receive its IP addr via DHCP.

I couldn't connect to webadmin because REF_DefaultInternal[...] itfhw was not configured (blank). Thanks to this page:

http://blog.danic.net/sophos-utm-configuring-interfaces-and-ip-addresses-via-cli-in-a-hyper-v-environment/

At the console as root:

/usr/local/bin/confd-client.plx

OBJS

interface

ethernet

REF_DefaultInternal[...]

itfhw=REF_ItfEthEth2...[...] (recalling that eth2 was the LAN interface on the physical host I'm migrating from)

status=1

w

If the above commands don't work for you, you may need to enter RAW mode and execute 'lock_override' prior to entering OBJS.

Hope this helps others when migrating.