Add info about routable IPs to advertisement:
Add info about routable IPs to advertisement:

   <rspec_routable_addresses
      xmlns="http://www.protogeni.net/resources/rspec/ext/emulab/1"
      configured='XXX' available='YYY' />

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