x@d1
  router = r1, transport = t1
  host 192.168.4.3 [192.168.4.3] 
x@d2
  router = r2, transport = t2
  host V4NET.9.8.7 [V4NET.9.8.7] 
x@d30
  router = r3, transport = t4
  host 1.2.3.4 [1.2.3.4] 
x@d31
  router = r3, transport = t3
  host 1.2.3.4 [1.2.3.4]