From: Martin Schwenke <martin@meltin.net>
Date: Wed, 29 Aug 2018 05:48:21 +0000 (+1000)
Subject: ctdb-common: Set version more obviously in IPv6 NA packet
X-Git-Tag: tdb-1.3.17~1971
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af5a42bf028b2159eed740c1e7d8baae11eb4c06;p=thirdparty%2Fsamba.git

ctdb-common: Set version more obviously in IPv6 NA packet

Version is the top 4 bits of this field.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
---

diff --git a/ctdb/common/system_socket.c b/ctdb/common/system_socket.c
index b528b89af8f..842ad2b922a 100644
--- a/ctdb/common/system_socket.c
+++ b/ctdb/common/system_socket.c
@@ -278,7 +278,7 @@ static int ip6_na_build(uint8_t *buffer,
 	eh->ether_type = htons(ETHERTYPE_IP6);
 
 	ip6 = (struct ip6_hdr *)(buffer + sizeof(struct ether_header));
-	ip6->ip6_vfc  = 0x60;
+	ip6->ip6_vfc  = 6 << 4;
 	ip6->ip6_plen = htons(sizeof(struct nd_neighbor_advert) +
 			      sizeof(struct nd_opt_hdr) +
 			      ETH_ALEN);