From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-329116-1518023150-2-7387705916763536193 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, UNPARSEABLE_RELAY 0.001, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Attached: signature.asc X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1518023150; b=niD4Yczv5l25d9CVklAlJF20zDJIlkttHeIIJQQp7xfjvGC jyVjZbIzdQlBPpMgLZptNx6FRQyurzxrkyUeUPf6VjGfrLdQ2SrDfNvgJYnBgSFk uuVJxFoSIiHzH2uf/EdON/yRqD8s16iDfoBmGvS3FrqEIQl/cPKm1bPY1k8uvdhx HAETbnyXkCgtTNCOCdpc7FOQkFOFsvVHzYJTMaHyGIu99Rxe8EwV6WksU3YR84WW S26XdDFxXXU7Jij8H49PrKJrQgk6Z65L1SYdKWz1Gk2l8JPrQ+gdLYelWDWtnpTP DT9x+hmJ3CD/g3kp90vyGyQo12q2CSWBcmC8Xeg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=message-id:subject:from:to:cc:date :in-reply-to:references:content-type:mime-version:sender :list-id; s=arctest; t=1518023150; bh=p0cAtcSXR12nr8IFvpf8G7UMyC 6CF4Rge+ZhP+BykhY=; b=ml54lGaIKsLfNtnVH1xoaOnrd3nvwDp1d71mMPXS2z EMCIUaTMJA8pRGL50WMmR404TRMG4yFHgSuLp7anoP/el+YlHLAKlGNNOoYmkHvs ssheL6iJwghEVSWl4m2t1/KNqjCoQeelE7w7YEFjq61U8DvuS4UTocAUtEHl1NBI h8ndbO76lzNXmNg6XAOioqVg96bU+KqcxhxO0uabVBZRF1psTA415HNSizFLDmgj JQ5uYzU00nsJqljV/gU4QRbHaKVx7qyk1hrPX5jfZehKwBPP/0lmphaGz12zxLqt xEF/dJw9fOBHGqT9CD0H6X5IxzP+m0ztiaYPcWMEBaog== ARC-Authentication-Results: i=1; mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=debian.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=debian.org header.result=pass header_is_org_domain=yes Authentication-Results: mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=debian.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=debian.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754718AbeBGRFr (ORCPT ); Wed, 7 Feb 2018 12:05:47 -0500 Received: from pic75-3-78-194-244-226.fbxo.proxad.net ([78.194.244.226]:51900 "EHLO mail.corsac.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754683AbeBGRFq (ORCPT ); Wed, 7 Feb 2018 12:05:46 -0500 Message-ID: <1518023139.2100.7.camel@debian.org> Subject: Re: Regression for ip6-in-ip4 IPsec tunnel in 4.14.16 From: Yves-Alexis Perez To: Mike Maloney Cc: "David S. Miller" , Alexey Kuznetsov , Hideaki YOSHIFUJI , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Eric Dumazet , Greg Kroah-Hartman , stable@vger.kernel.org, debian-kernel@lists.debian.org, Tobias Brunner Date: Wed, 07 Feb 2018 18:05:39 +0100 In-Reply-To: <1518021487.2100.2.camel@debian.org> References: <1518021487.2100.2.camel@debian.org> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-y8aIgBAAEi5nr6gUuEcQ" X-Mailer: Evolution 3.26.3-1 Mime-Version: 1.0 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: --=-y8aIgBAAEi5nr6gUuEcQ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2018-02-07 at 17:38 +0100, Yves-Alexis Perez wrote: > Starting with 4.14.16, IPv6 traffic is broken. When trying a simple ping > to an IPv6 address I get: >=20 > ping: sendmsg: Invalid argument I forgot an important bit of information: due to the way routers usually br= oke path MTU discovery by filtering ICMP, I'm lowering the MTU to 1280 (so exac= tly IPV6_MIN_MTU) when using IPsec. The MTU is configured by the IKE daemon (strongSwan, thus adding Tobias to CC:) in routing table 220: default via 192.168.28.254 dev eth0 proto static src 192.168.0.129 mtu 1280= advmss 1320 I'll try to printk the mtu before returning EINVAL to see why it's lower th= an 1280, but maybe the IP encapsulation is not correctly handled? Regards, --=20 Yves-Alexis --=-y8aIgBAAEi5nr6gUuEcQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAlp7MeMACgkQ3rYcyPpX RFvDVQf/Rwp34RBjpnoH3yV0Nrl+VP+ImCLTrtB+p/jItLvUJtbXOT7SBYpOrm65 icvr5CXMOGYp66Rb3q2xXlhfurteiB1HnlSDYw4X5x9jcx/GhU6RDZQ/fUBW91/0 jLx68QQ6Iv7nYoAEaFUy6Rv+mCLZsoS1pHsoqgfIE6eRpb2wtZQFeXaWhYGk0M7W FWrvSGDeGngYkb+dvqyq5KsJwig3fTV/A1x0hfI8Pa6hhzOaHYJSrkC6r+kRyGhK haxQFgVA42uc50I01mp+04Hk76ltoX/OSoUaIPIL7DfcyyHGHrj+prlYlwoW5tWA kcDotjz3pbQmIcyCK0YlYuDYO2nZ7w== =mt20 -----END PGP SIGNATURE----- --=-y8aIgBAAEi5nr6gUuEcQ--