Date: Fri, 13 Jun 2025 20:56:08 GMT From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: de8fb1b38357 - main - tcp: fix local blackholing Message-ID: <202506132056.55DKu8vg086301@gitrepo.freebsd.org>
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The branch main has been updated by tuexen: URL: https://cgit.FreeBSD.org/src/commit/?id=de8fb1b3835758998a53d772deeebcdb71bbb823 commit de8fb1b3835758998a53d772deeebcdb71bbb823 Author: Michael Tuexen <tuexen@FreeBSD.org> AuthorDate: 2025-06-13 20:53:42 +0000 Commit: Michael Tuexen <tuexen@FreeBSD.org> CommitDate: 2025-06-13 20:53:42 +0000 tcp: fix local blackholing The sysctl-variable net.inet.tcp.blackhole_local should affect TCP segments from an IPv6 address of the local host, not of a host on the local area network. Thanks to cc@ for pointing me to the issue. Reviewed by: cc MFC after: 1 week Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D50828 --- sys/netinet/tcp_input.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c index c00a102e8520..1c617b85ef89 100644 --- a/sys/netinet/tcp_input.c +++ b/sys/netinet/tcp_input.c @@ -1385,7 +1385,7 @@ dropwithreset: ((V_blackhole == 1 && (thflags & TH_SYN)) || V_blackhole > 1))) && (V_blackhole_local || ( #ifdef INET6 - isipv6 ? !in6_localaddr(&ip6->ip6_src) : + isipv6 ? !in6_localip(&ip6->ip6_src) : #endif #ifdef INET !in_localip(ip->ip_src)
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