Tmp hack to allow use of a 10Gb shared LAN.
Tmp hack to allow use of a 10Gb shared LAN.

Til we have snmpit working on the Arista, we statically configure a single
10Gb LAN and put one interface from each of the d820s into it.

This is controlled by setting the node_attribute.shared_lan_* attributes
for each node (ip,mask,mac,speed).

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