From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 409D03F8257; Fri, 4 Sep 2026 10:22:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788517333; cv=none; b=djjaBvCU+RGHxBvEDmkRDIU0Le3SU9OoRq2ZPT0b6Of1ht5Nd0F5IOodmNXE7DKvUDOluk1e6akorEZXWFEEx/jLImsydj9Ge784x93rjwiHJWuMxnddhcj7/ip9Z4n/LNW6JwH0pA0+u+3lxmA3Br60NJVOr9PpIEZnlr2FJKA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788517333; c=relaxed/simple; bh=BmOz+dUmMCLlNCERmSKkkwGqOWCoQ4fU1Camdms7s9U=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Tfne1wZf4vCPfoOGultwtHa1CUEwYIlzkZ08ZdcVx1HeRAbgi8sibwG01vjkYjr/lqiNDYZSotUvk/E1E8crs3pUziJSZR0BfV65khB3bghafWUp1i9wNcPPauk2ELAMEqE405AFr+rxG2Hl7CvUCRNdE8wECOOdbDclLDp6qRY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lNwSA7Dm; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lNwSA7Dm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11FC31F00A3D; Fri, 4 Sep 2026 10:21:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788517322; bh=oG2Mwepo6HLYoctiN80CCoKCdLGynO4Z+fuELH+22yY=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=lNwSA7Dmcia+2TGdAqlh4p1GG9/WLwayfT8CdfOKZKOwTnTvPZqaxkL/lRnbSAOuY xU1HLQP9RHnm9+b5Ern0pVO0mqUOJxh+4ELJHN+uZz/00U7ldde6KN45hXp6tadzUl rpbaGkJMRpqAd2bmkn+aDFsnruUa51sKxq/EUfEPItTtJ1xEvGkRzsEP1ccJ6UD4uN 0/SEJluzUIPRtAx1hO1cgI/2gtTuJiIsPr+PyVxlQSYD5bRoi4BG2U6WTZ1Wf1XeCC zD7DxSfL+KFgo7rd50SnA9hoIyc5hOFP5VPlsjxfd2qGwWY+KSOSV0fjS72q4qsF9h jLJ8TM/ZV70eg== Message-ID: <2946842d-09bb-454d-9eae-4c343c3bb0d8@kernel.org> Date: Fri, 4 Sep 2026 12:21:50 +0200 Precedence: bulk X-Mailing-List: netfilter-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH net v2] net/ipv6: don't route packets with unknown source address Content-Language: fr To: =?UTF-8?B?w43DsWlnbyBIdWd1ZXQ=?= Cc: Jakub Kicinski , David Ahern , Andrew Lunn , "David S. Miller" , Eric Dumazet , Paolo Abeni , Neal Cardwell , Ido Schimmel , Pablo Neira Ayuso , Florian Westphal , Willem de Bruijn , dcaratti@redhat.com, ihuguet@redhat.com, Simon Horman , Kuniyuki Iwashima , Phil Sutter , Daniel Borkmann , Junseo Lim , Martin KaFai Lau , Xuanqiang Luo , Fernando Fernandez Mancera , Leon Hwang , Willem de Bruijn , Kees Cook , Jeff Layton , Christian Brauner , Qi Tang , Joe Damato , Breno Leitao , Li RongQing , "open list:VRF" , open list , "open list:NETFILTER" , "open list:NETFILTER" , "open list:BPF [MISC] :Keyword:(?:b|_)bpf(?:b|_)" References: <20260903121057.80006-1-ihuguet@riseup.net> <20260903153848.20b90f77@kernel.org> From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; keydata= xsFNBFXj+ekBEADxVr99p2guPcqHFeI/JcFxls6KibzyZD5TQTyfuYlzEp7C7A9swoK5iCvf YBNdx5Xl74NLSgx6y/1NiMQGuKeu+2BmtnkiGxBNanfXcnl4L4Lzz+iXBvvbtCbynnnqDDqU c7SPFMpMesgpcu1xFt0F6bcxE+0ojRtSCZ5HDElKlHJNYtD1uwY4UYVGWUGCF/+cY1YLmtfb WdNb/SFo+Mp0HItfBC12qtDIXYvbfNUGVnA5jXeWMEyYhSNktLnpDL2gBUCsdbkov5VjiOX7 CRTkX0UgNWRjyFZwThaZADEvAOo12M5uSBk7h07yJ97gqvBtcx45IsJwfUJE4hy8qZqsA62A nTRflBvp647IXAiCcwWsEgE5AXKwA3aL6dcpVR17JXJ6nwHHnslVi8WesiqzUI9sbO/hXeXw TDSB+YhErbNOxvHqCzZEnGAAFf6ges26fRVyuU119AzO40sjdLV0l6LE7GshddyazWZf0iac nEhX9NKxGnuhMu5SXmo2poIQttJuYAvTVUNwQVEx/0yY5xmiuyqvXa+XT7NKJkOZSiAPlNt6 VffjgOP62S7M9wDShUghN3F7CPOrrRsOHWO/l6I/qJdUMW+MHSFYPfYiFXoLUZyPvNVCYSgs 3oQaFhHapq1f345XBtfG3fOYp1K2wTXd4ThFraTLl8PHxCn4ywARAQABzSRNYXR0aGlldSBC YWVydHMgPG1hdHR0YmVAa2VybmVsLm9yZz7CwZEEEwEIADsCGwMFCwkIBwIGFQoJCAsCBBYC AwECHgECF4AWIQToy4X3aHcFem4n93r2t4JPQmmgcwUCZUDpDAIZAQAKCRD2t4JPQmmgcz33 EACjROM3nj9FGclR5AlyPUbAq/txEX7E0EFQCDtdLPrjBcLAoaYJIQUV8IDCcPjZMJy2ADp7 /zSwYba2rE2C9vRgjXZJNt21mySvKnnkPbNQGkNRl3TZAinO1Ddq3fp2c/GmYaW1NWFSfOmw MvB5CJaN0UK5l0/drnaA6Hxsu62V5UnpvxWgexqDuo0wfpEeP1PEqMNzyiVPvJ8bJxgM8qoC cpXLp1Rq/jq7pbUycY8GeYw2j+FVZJHlhL0w0Zm9CFHThHxRAm1tsIPc+oTorx7haXP+nN0J iqBXVAxLK2KxrHtMygim50xk2QpUotWYfZpRRv8dMygEPIB3f1Vi5JMwP4M47NZNdpqVkHrm jvcNuLfDgf/vqUvuXs2eA2/BkIHcOuAAbsvreX1WX1rTHmx5ud3OhsWQQRVL2rt+0p1DpROI 3Ob8F78W5rKr4HYvjX2Inpy3WahAm7FzUY184OyfPO/2zadKCqg8n01mWA9PXxs84bFEV2mP VzC5j6K8U3RNA6cb9bpE5bzXut6T2gxj6j+7TsgMQFhbyH/tZgpDjWvAiPZHb3sV29t8XaOF BwzqiI2AEkiWMySiHwCCMsIH9WUH7r7vpwROko89Tk+InpEbiphPjd7qAkyJ+tNIEWd1+MlX ZPtOaFLVHhLQ3PLFLkrU3+Yi3tXqpvLE3gO3LM7BTQRV4/npARAA5+u/Sx1n9anIqcgHpA7l 5SUCP1e/qF7n5DK8LiM10gYglgY0XHOBi0S7vHppH8hrtpizx+7t5DBdPJgVtR6SilyK0/mp 9nWHDhc9rwU3KmHYgFFsnX58eEmZxz2qsIY8juFor5r7kpcM5dRR9aB+HjlOOJJgyDxcJTwM 1ey4L/79P72wuXRhMibN14SX6TZzf+/XIOrM6TsULVJEIv1+NdczQbs6pBTpEK/G2apME7vf mjTsZU26Ezn+LDMX16lHTmIJi7Hlh7eifCGGM+g/AlDV6aWKFS+sBbwy+YoS0Zc3Yz8zrdbi Kzn3kbKd+99//mysSVsHaekQYyVvO0KD2KPKBs1S/ImrBb6XecqxGy/y/3HWHdngGEY2v2IP Qox7mAPznyKyXEfG+0rrVseZSEssKmY01IsgwwbmN9ZcqUKYNhjv67WMX7tNwiVbSrGLZoqf Xlgw4aAdnIMQyTW8nE6hH/Iwqay4S2str4HZtWwyWLitk7N+e+vxuK5qto4AxtB7VdimvKUs x6kQO5F3YWcC3vCXCgPwyV8133+fIR2L81R1L1q3swaEuh95vWj6iskxeNWSTyFAVKYYVskG V+OTtB71P1XCnb6AJCW9cKpC25+zxQqD2Zy0dK3u2RuKErajKBa/YWzuSaKAOkneFxG3LJIv Hl7iqPF+JDCjB5sAEQEAAcLBXwQYAQIACQUCVeP56QIbDAAKCRD2t4JPQmmgc5VnD/9YgbCr HR1FbMbm7td54UrYvZV/i7m3dIQNXK2e+Cbv5PXf19ce3XluaE+wA8D+vnIW5mbAAiojt3Mb 6p0WJS3QzbObzHNgAp3zy/L4lXwc6WW5vnpWAzqXFHP8D9PTpqvBALbXqL06smP47JqbyQxj Xf7D2rrPeIqbYmVY9da1KzMOVf3gReazYa89zZSdVkMojfWsbq05zwYU+SCWS3NiyF6QghbW voxbFwX1i/0xRwJiX9NNbRj1huVKQuS4W7rbWA87TrVQPXUAdkyd7FRYICNW+0gddysIwPoa KrLfx3Ba6Rpx0JznbrVOtXlihjl4KV8mtOPjYDY9u+8x412xXnlGl6AC4HLu2F3ECkamY4G6 UxejX+E6vW6Xe4n7H+rEX5UFgPRdYkS1TA/X3nMen9bouxNsvIJv7C6adZmMHqu/2azX7S7I vrxxySzOw9GxjoVTuzWMKWpDGP8n71IFeOot8JuPZtJ8omz+DZel+WCNZMVdVNLPOd5frqOv mpz0VhFAlNTjU1Vy0CnuxX3AM51J8dpdNyG0S8rADh6C8AKCDOfUstpq28/6oTaQv7QZdge0 JY6dglzGKnCi/zsmp2+1w559frz4+IC7j/igvJGX4KDDKUs0mlld8J2u2sBXv7CGxdzQoHaz lzVbFe7fduHbABmYz9cefQpO7wDE/Q== Organization: NGI0 Core In-Reply-To: <20260903153848.20b90f77@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Íñigo, On 04/09/2026 00:38, Jakub Kicinski wrote: > 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) > ... Just in case, do not hesitate to look at the new countainers that might help you running those tests locally: https://lore.kernel.org/9c66a2b4-2787-4421-bc9b-627de2f708bd@kernel.org https://github.com/linux-netdev/nipa/wiki/Running-Netdev-CI-tests-locally Cheers, Matt