From owner-freebsd-ipfw@freebsd.org Tue Feb 16 11:58:06 2021 Return-Path: Delivered-To: freebsd-ipfw@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id B70F8534886 for ; Tue, 16 Feb 2021 11:58:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 4Dfzxp4dVMz3lZZ for ; Tue, 16 Feb 2021 11:58:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 9F018534C18; Tue, 16 Feb 2021 11:58:06 +0000 (UTC) Delivered-To: ipfw@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 9ECC7534B66 for ; Tue, 16 Feb 2021 11:58:06 +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 4Dfzxp43wtz3lHk for ; Tue, 16 Feb 2021 11:58:06 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) 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 7E91C108AF for ; Tue, 16 Feb 2021 11:58:06 +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 11GBw6LM023016 for ; Tue, 16 Feb 2021 11:58:06 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 11GBw6Xk023015 for ipfw@FreeBSD.org; Tue, 16 Feb 2021 11:58:06 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: ipfw@FreeBSD.org Subject: [Bug 253476] ipfw keepalive: tcp_do_segment: Timestamp missing, segment silently dropped Date: Tue, 16 Feb 2021 11:58:04 +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: 13.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rscheff@freebsd.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: ipfw@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 MIME-Version: 1.0 X-BeenThere: freebsd-ipfw@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: IPFW Technical Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Feb 2021 11:58:06 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253476 --- Comment #11 from Richard Scheffenegger --- To add more confusion:=20 The advisory UTO option could be used by ipfw to piggy-back on some ACKs, to indicate to the end hosts, within which interval it expects the end hosts to send out another keepalive or data/control packet. https://tools.ietf.org/html/rfc5482 (Obviously, FBSD would need to implement processing of this options too. Also, it doesn't help the puristic case, where no modification of the on-wi= re packet stream is allowable). Pragmatically, the most easy way out would be for ipfw to keep additional s= tate with the TSopt val and ecr of the most recent packet, and include the TSopt= in ipfw-originated keepalives. --=20 You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.=