Date: Sat, 11 Apr 2020 09:36:42 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r359803 - stable/11/sys/netinet6 Message-ID: <202004110936.03B9agdR041256@repo.freebsd.org>
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Author: ae Date: Sat Apr 11 09:36:41 2020 New Revision: 359803 URL: https://svnweb.freebsd.org/changeset/base/359803 Log: MFC r359498: 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> Modified: stable/11/sys/netinet6/nd6_nbr.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/netinet6/nd6_nbr.c ============================================================================== --- stable/11/sys/netinet6/nd6_nbr.c Sat Apr 11 09:35:48 2020 (r359802) +++ stable/11/sys/netinet6/nd6_nbr.c Sat Apr 11 09:36:41 2020 (r359803) @@ -745,6 +745,12 @@ 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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