From dea9886454c1c0953b5977dd8a96718be465b962 Mon Sep 17 00:00:00 2001
From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
Date: Fri, 8 Dec 2017 17:00:47 +0100
Subject: [PATCH] BGP: Link check just for single-hop

---
 proto/bgp/bgp.c    | 4 ++++
 proto/bgp/config.Y | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/proto/bgp/bgp.c b/proto/bgp/bgp.c
index a26c0cb9..f6d26639 100644
--- a/proto/bgp/bgp.c
+++ b/proto/bgp/bgp.c
@@ -1621,6 +1621,10 @@ bgp_postconfig(struct proto_config *CF)
   if (cf->multihop < 0)
     cf->multihop = internal ? 64 : 0;
 
+  /* Link check for single-hop BGP by default */
+  if (cf->check_link < 0)
+    cf->check_link = !cf->multihop;
+
 
   if (!cf->local_as)
     cf_error("Local AS number must be set");
diff --git a/proto/bgp/config.Y b/proto/bgp/config.Y
index 0bd4c554..6ce0f1aa 100644
--- a/proto/bgp/config.Y
+++ b/proto/bgp/config.Y
@@ -58,7 +58,7 @@ bgp_proto_start: proto_start BGP {
      BGP_CFG->gr_mode = BGP_GR_AWARE;
      BGP_CFG->gr_time = 120;
      BGP_CFG->setkey = 1;
-     BGP_CFG->check_link = 1;
+     BGP_CFG->check_link = -1;
    }
  ;