aspath_verify
e4 = aspath_verify(buf, 1, 0);
e2 = aspath_verify(buf, 0, 0);
e4 = aspath_verify(buf, 1, 0);
e2 = aspath_verify(buf, 0, 0);
int aspath_verify(struct ibuf *, int, int);
error = aspath_verify(&attrbuf, peer_has_as4byte(peer),
if ((error = aspath_verify(&attrbuf, 1,