[ns] ns Qs (fwd)

[Yan Yu <yanyu@catarina.usc.edu>]

hi, there,

  I have some ns questions, if you could clarify me on these, that would
be very helpful:
1. Is the Lan Interface indexed by the node object itself instead of the
node id?

2. Is the node address and its MAC address different or same?

3. Is the handler h=1 means travel up the stack, h=-1 means travel down
the stack??

was it used to be h=0 means travel up, h != 0 means travel down the
stack??

Thanks!!!
yan