From c6851ad04cf6be2ead6a46f9c5523c59ddf8301f Mon Sep 17 00:00:00 2001
From: "Andrey V. Elsukov" <ae@FreeBSD.org>
Date: Mon, 17 Sep 2018 10:10:14 +0000
Subject: [PATCH] Restore outbound packets capturing for if_gre(4). It was
 missed in r335048. Also clear M_MCAST and M_BCAST flags for encapsulated
 datagram, since it will have new IP header.

Approved by:	re (kib)
---
 sys/net/if_gre.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/net/if_gre.c b/sys/net/if_gre.c
index 591396c588dd..a2b923ee04e9 100644
--- a/sys/net/if_gre.c
+++ b/sys/net/if_gre.c
@@ -569,6 +569,8 @@ gre_transmit(struct ifnet *ifp, struct mbuf *m)
 		goto drop;
 	}
 	af = m->m_pkthdr.csum_data;
+	BPF_MTAP2(ifp, &af, sizeof(af), m);
+	m->m_flags &= ~(M_BCAST|M_MCAST);
 	M_SETFIB(m, sc->gre_fibnum);
 	M_PREPEND(m, sc->gre_hlen, M_NOWAIT);
 	if (m == NULL) {