Hello Rules - neighbor TO
< xid:Hello-Node | up:true,
neighbors: xNLa @ xidN @ xNLd,
neighborTimers: xNTLa @ xidNT @ xNTLd,
timerSet: xTS U < xidNT:Timer | on:true, time:0 >
neighborTimers: xNTLa @ xNTLd,
if (not( < xidNT:Timer | on:true, time:0 > in xTS)
and (length(xNLa) == length(xNTLa))) fi .