From nobody Thu Mar 21 11:13:05 2024 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4V0jVp6F2yz5Fqqc for ; Thu, 21 Mar 2024 11:13:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4V0jVp5C6bz4DPc for ; Thu, 21 Mar 2024 11:13:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1711019586; a=rsa-sha256; cv=none; b=rHOqbh3YlfL1XQ8a9kz52hdGNS2NBsR9E2EP6qh8tslcqDLf5gEXoXgXuer11Jqd8ZYfCd CJhd6ZvR3LHzyzR1m/S82DYXwCchVvRnabpEUk6wzR9Y3/X08+dR80BWnrPSXb9iHbd+9x AgWOgECa4Rs5JB6xOjAfDbwDjbynFeIKoGbhpLhVPY6WFB+NtEjxVP8566fAKYN7Qhl6/W rI8pwf0DvNGXvtdKy5j+tq3hB7DM0brpBeBqJQf1P4CSoDdKAoAkJVY9GhoxWbQcLcQPD7 nUEEN/uJetRCBRPoaUrTs/WeYCL4QGjYQh/NVIvKP2+3ugb8kLjPamKer6kPTg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1711019586; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jSaMYXgiPPzjEZoaiNfvOTbfrFPf6gJt9WpWlN3yydQ=; b=qsVNGV65vp4i0LDjYaGbskd3N8EUyzm/EmoHSnaet+DrcFvtpyejxjiSjNj2+n1r128Aq7 IEFNA5PTpCSDWyTEcAxoVDmZYzS5WDRYXSgO4Kmjn70hNhBjAXVFZUHfhQOqqur4q+i6Rd 9Op6s5r+pR8BpwbQnLwW+0Zo3W25p1d1J4XSQ4SgrVmHM7sceQEtFWtBghUQfLSGxTP1+J 1O5eTIo9IZs/roT9RkfVWdRYVjAy4XSstA3r8a20crUR4A/TUERCtm+TxGDPV/cX6uqHOK H/35JbpC5MaWEYFwEUyKoXTHTAc3QUyxRVVnc8YS0N360CYF3SUTxciAMD5ZaQ== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4V0jVp4prqzXjW for ; Thu, 21 Mar 2024 11:13:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 42LBD6du078538 for ; Thu, 21 Mar 2024 11:13:06 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 42LBD6kT078537 for net@FreeBSD.org; Thu, 21 Mar 2024 11:13:06 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 276838] ovpn(4) - problems with large TCP segments over IPv6 tunnel when DCO module is used at both ends Date: Thu, 21 Mar 2024 11:13:05 +0000 X-Bugzilla-Reason: AssignedTo CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 14.0-STABLE X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: zarychtam@plan-b.pwste.edu.pl X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276838 --- Comment #4 from Marek Zarychta --- In my case, the limits for the successful "ping -4 -s $size remote_IP" are: - in IPv6 tunnel, $size is limited to 1400 - in IPv4 tunnel $size limit is 1412 It was tested between FreeBSD stable/14 running OpenVPN 2.6.10 with DCO and FreeBSD CURRENT running OpenVPN 2.6.9 as a client.=20 It's not the case though. The problem I faced was too large TCP segments th= at couldn't pass the tunnel thus preventing SSH sessions from being established over tunnel. --=20 You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.=