Date: Mon, 09 Feb 2026 20:29:16 +0000 From: Guido Falsi <madpilot@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: a2eb0894b79b - main - sys/netinet6: switch net.inet6.ip6.use_stableaddr to on by default Message-ID: <698a439c.3e329.5d619acd@gitrepo.freebsd.org>
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The branch main has been updated by madpilot: URL: https://cgit.FreeBSD.org/src/commit/?id=a2eb0894b79bd0241e51c6888a52bea369ae8a6a commit a2eb0894b79bd0241e51c6888a52bea369ae8a6a Author: Guido Falsi <madpilot@FreeBSD.org> AuthorDate: 2026-02-09 20:27:15 +0000 Commit: Guido Falsi <madpilot@FreeBSD.org> CommitDate: 2026-02-09 20:27:15 +0000 sys/netinet6: switch net.inet6.ip6.use_stableaddr to on by default This change switches to using RFC 7217 algorithm as the default to generate SLAAC addresses for IPv6 interfaces configured with accept_rtadv. Reviewed by: pouria, glebius, zlei Approved by: zlei Relnotes: yes Differential Revision: https://reviews.freebsd.org/D55138 --- UPDATING | 9 +++++++++ sys/netinet6/nd6_rtr.c | 2 +- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/UPDATING b/UPDATING index 5029bf086bdd..d4a6e486aed0 100644 --- a/UPDATING +++ b/UPDATING @@ -27,6 +27,15 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 16.x IS SLOW: world, or to merely disable the most expensive debugging functionality at runtime, run "ln -s 'abort:false,junk:false' /etc/malloc.conf".) +20260129: + The "net.inet6.ip6.use_stableaddr" sysctl is now on by default. + This changes the default algorithm to choose IPv6 SLAAC autogenerated + addresses from embedding the interface hardware address to using + SHA256-HMAC hash as described in RFC 7217 to derive an opaque but + stable Address. If you are using autoconfigured IPv6 addresses at + reboot they will be different after this change, but constant + thereafter, please update your DNS records if any. + 20260106: Zstd has moved to the new "zstd" package. If you have set-minimal installed, this package will be installed automatically, otherwise diff --git a/sys/netinet6/nd6_rtr.c b/sys/netinet6/nd6_rtr.c index 0ca97125110c..8f557ba77af5 100644 --- a/sys/netinet6/nd6_rtr.c +++ b/sys/netinet6/nd6_rtr.c @@ -95,7 +95,7 @@ VNET_DEFINE(int, nd6_defifindex); #define V_nd6_defifp VNET(nd6_defifp) VNET_DEFINE(int, ip6_use_tempaddr) = 0; -VNET_DEFINE(bool, ip6_use_stableaddr) = 0; +VNET_DEFINE(bool, ip6_use_stableaddr) = 1; VNET_DEFINE(int, ip6_desync_factor); VNET_DEFINE(uint32_t, ip6_temp_max_desync_factor) = TEMP_MAX_DESYNC_FACTOR_BASE;home | help
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