prefix_bypeer
p = prefix_bypeer(re, peer, path_id);
p = prefix_bypeer(re, peerself, 0);
p = prefix_bypeer(re, peerself, 0);
struct prefix *prefix_bypeer(struct rib_entry *, struct rde_peer *,
old = prefix_bypeer(re, peer, 0);
p = prefix_bypeer(re, peer, 0);
return (prefix_bypeer(re, peer, path_id));