From: Maria Matejka <mq@ucw.cz>
Date: Thu, 16 Mar 2023 18:23:19 +0000 (+0100)
Subject: BGP: Free bind applies also to outbound connections
X-Git-Tag: v3.0-alpha1~7^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2b712554d18dfb09274c003315a573f8578270ec;p=thirdparty%2Fbird.git

BGP: Free bind applies also to outbound connections

Even though the free bind option is primarily meant to alleviate problems
with addresses assigned too late, it's also possible to use BIRD with AnyIP
configuration, assigning whole ranges to the machine. Therefore free bind
allows also to create an outbound connection from specific address even though
such address is not assigned.
---

diff --git a/proto/bgp/bgp.c b/proto/bgp/bgp.c
index a0e83415f..9408715e5 100644
--- a/proto/bgp/bgp.c
+++ b/proto/bgp/bgp.c
@@ -1109,6 +1109,7 @@ bgp_connect(struct bgp_proto *p)	/* Enter Connect state and start establishing c
   s->tos = IP_PREC_INTERNET_CONTROL;
   s->password = p->cf->password;
   s->tx_hook = bgp_connected;
+  s->flags = p->cf->free_bind ? SKF_FREEBIND : 0;
   BGP_TRACE(D_EVENTS, "Connecting to %I%J from local address %I%J",
 	    s->daddr, ipa_is_link_local(s->daddr) ? p->cf->iface : NULL,
 	    s->saddr, ipa_is_link_local(s->saddr) ? s->iface : NULL);