aspath_length
plen = aspath_length(a->aspath);
aslen = aspath_length(asp->aspath);
aslen = aspath_length(asp->aspath);
len = aspath_length(a);
if (aspath_length(a) == 0) {
if (aspath_length(aspath) == 0)
aspath_length(p->aspath));
plen = aspath_length(asp->aspath);
plen = aspath_length(asp->aspath);