From: Jakub Kicinski <kuba@kernel.org>
To: "Íñigo Huguet" <ihuguet@riseup.net>
Cc: David Ahern <dsahern@kernel.org>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
Neal Cardwell <ncardwell@google.com>,
Ido Schimmel <idosch@nvidia.com>,
Pablo Neira Ayuso <pablo@netfilter.org>,
Florian Westphal <fw@strlen.de>,
Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
dcaratti@redhat.com, ihuguet@redhat.com,
Simon Horman <horms@kernel.org>,
Kuniyuki Iwashima <kuniyu@google.com>, Phil Sutter <phil@nwl.cc>,
Daniel Borkmann <daniel@iogearbox.net>,
Junseo Lim <zirajs7@gmail.com>,
Martin KaFai Lau <martin.lau@kernel.org>,
Xuanqiang Luo <luoxuanqiang@kylinos.cn>,
Fernando Fernandez Mancera <fmancera@suse.de>,
Leon Hwang <leon.hwang@linux.dev>,
Willem de Bruijn <willemb@google.com>,
Kees Cook <kees@kernel.org>, Jeff Layton <jlayton@kernel.org>,
Christian Brauner <brauner@kernel.org>,
Qi Tang <tpluszz77@gmail.com>, Joe Damato <joe@dama.to>,
Breno Leitao <leitao@debian.org>,
Li RongQing <lirongqing@baidu.com>,
netdev@vger.kernel.org (open list:VRF),
linux-kernel@vger.kernel.org (open list),
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[MISC]:Keyword:(?:\b|_)bpf(?:\b|_))
Subject: Re: [PATCH net v2] net/ipv6: don't route packets with unknown source address
Date: Thu, 3 Sep 2026 15:38:48 -0700 [thread overview]
Message-ID: <20260903153848.20b90f77@kernel.org> (raw)
In-Reply-To: <20260903121057.80006-1-ihuguet@riseup.net>
On Thu, 3 Sep 2026 14:10:40 +0200 Íñigo Huguet wrote:
> Don't allow routing packets with a source address that is not configured
> in the host. Allow it only in certain cases like when using a
> transparent socket, by setting the ANYSRC flag in flowi_flags.
breaks a bunch of selftests, too, FWIW
Please make sure to mend those if you want to forge ahead as a non-fix
- selftests/net/xfrm_state.sh:
"IPv6 unreachable from IPsec gateway s2" [FAIL]
"IPv6 MTU exceeded from IPsec gateway s2" [FAIL]
(the equivalent IPv4 cases still pass)
- selftests/net/vrf_route_leaking.sh:
"VRF ICMP local IPv6" [FAIL]
"VRF tcp local connection IPv6" [FAIL]
"VRF udp local connection IPv6" [FAIL]
- selftests/net/srv6_encap_lookup_l3vpn_test.sh:
"IPv6 connectivity: rt-1 -> rt-2 (tenant 100/200)" [FAIL]
"IPv6 connectivity: rt-2 -> rt-1 (tenant 100/200)" [FAIL]
(again, the IPv4 variants of the same tests pass)
...
next prev parent reply other threads:[~2026-09-03 22:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-03 12:10 [PATCH net v2] net/ipv6: don't route packets with unknown source address Íñigo Huguet
2026-09-03 14:56 ` Ido Schimmel
2026-09-07 7:24 ` Íñigo Huguet
2026-09-03 22:38 ` Jakub Kicinski [this message]
2026-09-04 10:21 ` Matthieu Baerts
2026-09-04 12:11 ` sashiko-bot
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