Date: Wed, 1 Apr 2020 02:13:02 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r359498 - head/sys/netinet6 Message-ID: <202004010213.0312D2iO096793@repo.freebsd.org>
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Author: ae Date: Wed Apr 1 02:13:01 2020 New Revision: 359498 URL: https://svnweb.freebsd.org/changeset/base/359498 Log: Ignore ND6 neighbor advertisement received for static link-layer entries. Previously such NA could override manually created LLE. Reported by: Martin Beran <martin at mber cz> Reviewed by: melifaro MFC after: 10 days Modified: head/sys/netinet6/nd6_nbr.c Modified: head/sys/netinet6/nd6_nbr.c ============================================================================== --- head/sys/netinet6/nd6_nbr.c Tue Mar 31 22:41:57 2020 (r359497) +++ head/sys/netinet6/nd6_nbr.c Wed Apr 1 02:13:01 2020 (r359498) @@ -754,6 +754,12 @@ nd6_na_input(struct mbuf *m, int off, int icmp6len) goto freeit; } + /* + * Do not try to override static entry. + */ + if (ln->la_flags & LLE_STATIC) + goto freeit; + if (ln->ln_state == ND6_LLINFO_INCOMPLETE) { /* * If the link-layer has address, and no lladdr option came,
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