bird: Export any routes into iBGP with bgp_next_hop set to local LO IP.

Signed-off-by: Maximilian Wilhelm <max@rfc2324.org>

bird/ff-policy.conf

@@ -140,6 +140,7 @@ filter ibgp_out {
 	tag_site_routes ();
 {%- endif %}
 
+	bgp_next_hop = LO_IP;
 	accept;
 }