When looking for virtnodes on their physical nodes, look at the jailip in the nodes table if there is no match in the interfaces table. This is probably temporary until we get the vserver networking straightened out. Unlike jails, packets from vservers actually have the IP of the vserver as the src, not the physical host, but that does not correspond to anything in the interfaces table. This change lets me test things as they are now.
When looking for virtnodes on their physical nodes, look at the jailip
in the nodes table if there is no match in the interfaces table. This
is probably temporary until we get the vserver networking straightened
out. Unlike jails, packets from vservers actually have the IP of the
vserver as the src, not the physical host, but that does not
correspond to anything in the interfaces table. This change lets me
test things as they are now.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome