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Set the inp_vflag consistently for accepted TCP/IPv6 connections when

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net.inet6.ip6.v6only=0.

Without this patch, the inp_vflag would have INP_IPV4 and the
INP_IPV6 flags for accepted TCP/IPv6 connections if the sysctl
variable net.inet6.ip6.v6only is 0. This resulted in netstat
to report the source and destination addresses as IPv4 addresses,
even they are IPv6 addresses.

PR:			226421
Reviewed by:		bz, hiren, kib
MFC after:		3 days
Sponsored by:		Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D13514
This commit is contained in:
Michael Tuexen 2018-03-16 15:26:07 +00:00
parent 06d4810126
commit 1574b1e41e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=331061
1 changed files with 2 additions and 0 deletions
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2
sys/netinet/tcp_syncache.c
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@ -695,6 +695,8 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
inp->inp_inc.inc_flags = sc->sc_inc.inc_flags;
#ifdef INET6
if (sc->sc_inc.inc_flags & INC_ISIPV6) {
inp->inp_vflag &= ~INP_IPV4;
inp->inp_vflag |= INP_IPV6;
inp->in6p_laddr = sc->sc_inc.inc6_laddr;
} else {
inp->inp_vflag &= ~INP_IPV6;