[patch] update documentation

[Job Snijders]

On Tue, Jan 07, 2025 at 03:07:33PM +0000, Job Snijders wrote:
> RFC 8203 was replaced by RFC 9003; BIRD supports 9003 since 2019. While
> there add Send Hold Timer to the list.

Whoops, mangled the diff, the below applies cleanly to HEAD.

diff --git doc/bird.sgml doc/bird.sgml
index bafe0445..8420a66d 100644
--- doc/bird.sgml
+++ doc/bird.sgml
@@ -2837,15 +2837,15 @@ avoid routing loops.
 <item> <rfc id="7911"> - Advertisement of Multiple Paths in BGP
 <item> <rfc id="7947"> - Internet Exchange BGP Route Server
 <item> <rfc id="8092"> - BGP Large Communities Attribute
-<item> <rfc id="8203"> - BGP Administrative Shutdown Communication
 <item> <rfc id="8212"> - Default EBGP Route Propagation Behavior without Policies
 <item> <rfc id="8654"> - Extended Message Support for BGP
 <item> <rfc id="8950"> - Advertising IPv4 NLRI with an IPv6 Next Hop
+<item> <rfc id="9003"> - Extended BGP Administrative Shutdown Communication
 <item> <rfc id="9072"> - Extended Optional Parameters Length for BGP OPEN Message
 <item> <rfc id="9117"> - Revised Validation Procedure for BGP Flow Specifications
 <item> <rfc id="9234"> - Route Leak Prevention and Detection Using Roles
 <item> <rfc id="9494"> - Long-Lived Graceful Restart for BGP
-<item> <rfc id="9687"> - Send Hold Timer
+<item> <rfc id="9687"> - BGP Send Hold Timer
 </itemize>
 
 <sect1>Route selection rules
diff --git proto/bgp/bgp.c proto/bgp/bgp.c
index c18a73fe..df4c1f0f 100644
--- proto/bgp/bgp.c
+++ proto/bgp/bgp.c
@@ -97,10 +97,10 @@
  * RFC 7911 - Advertisement of Multiple Paths in BGP
  * RFC 7947 - Internet Exchange BGP Route Server
  * RFC 8092 - BGP Large Communities Attribute
- * RFC 8203 - BGP Administrative Shutdown Communication
  * RFC 8212 - Default EBGP Route Propagation Behavior without Policies
  * RFC 8654 - Extended Message Support for BGP
  * RFC 8950 - Advertising IPv4 NLRI with an IPv6 Next Hop
+ * RFC 9003 - Extended BGP Administrative Shutdown Communication
  * RFC 9072 - Extended Optional Parameters Length for BGP OPEN Message
  * RFC 9117 - Revised Validation Procedure for BGP Flow Specifications
  * RFC 9234 - Route Leak Prevention and Detection Using Roles
@@ -1709,7 +1709,7 @@ bgp_shutdown(struct proto *P)
   bgp_store_error(p, NULL, BE_MAN_DOWN, 0);
   p->startup_delay = 0;
 
-  /* RFC 8203 - shutdown communication */
+  /* RFC 9003 - shutdown communication */
   if (message)
   {
     uint msg_len = strlen(message);
diff --git proto/bgp/packets.c proto/bgp/packets.c
index 8b78cc13..37fe3cd6 100644
--- proto/bgp/packets.c
+++ proto/bgp/packets.c
@@ -3296,7 +3296,7 @@ bgp_error_dsc(uint code, uint subcode)
   return buff;
 }
 
-/* RFC 8203 - shutdown communication message */
+/* RFC 9003 - shutdown communication message */
 static int
 bgp_handle_message(struct bgp_proto *p, byte *data, uint len, byte **bp)
 {
@@ -3351,7 +3351,7 @@ bgp_log_error(struct bgp_proto *p, u8 class, char *msg, uint code, uint subcode,
 	  goto done;
         }
 
-      /* RFC 8203 - shutdown communication */
+      /* RFC 9003 - shutdown communication */
       if (((code == 6) && ((subcode == 2) || (subcode == 4))))
 	if (bgp_handle_message(p, data, len, &t))
 	  goto done;