From 5d414309ec5a01024d4de4c4f9521f8daa5c06ff Mon Sep 17 00:00:00 2001
From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
Date: Fri, 22 Jan 2021 04:34:15 +0100
Subject: [PATCH] MRT: Fix MP-BGP next hops

Flag signalling that MP-BGP mode should be used got reset after first
batch of routes, so remaining routes were processed without that, leading
to missing MP_REACH_NLRI attribute.

Thanks to Piotr Wydrych for the bugreport.
---
 proto/mrt/mrt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/proto/mrt/mrt.c b/proto/mrt/mrt.c
index 76d6c48f..838360c2 100644
--- a/proto/mrt/mrt.c
+++ b/proto/mrt/mrt.c
@@ -244,7 +244,6 @@ mrt_next_table(struct mrt_table_dump_state *s)
 
   s->table = tab;
   s->ipv4 = tab ? (tab->addr_type == NET_IP4) : 0;
-  s->bws->mp_reach = !s->ipv4;
 
   if (s->table)
     rt_lock_table(s->table);
@@ -434,6 +433,7 @@ mrt_rib_table_entry_bgp_attrs(struct mrt_table_dump_state *s, rte *r)
   mrt_buffer_need(b, MRT_ATTR_BUFFER_SIZE);
   byte *pos = b->pos;
 
+  s->bws->mp_reach = !s->ipv4;
   s->bws->mp_next_hop = NULL;
 
   /* Encode BGP attributes */