From owner-freebsd-bugs@freebsd.org Thu Nov 7 21:44:40 2019 Return-Path: Delivered-To: freebsd-bugs@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 B5D8117ADDC for ; Thu, 7 Nov 2019 21:44:40 +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 478H484TKRz4QLS for ; Thu, 7 Nov 2019 21:44:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 97CC117ADDB; Thu, 7 Nov 2019 21:44:40 +0000 (UTC) Delivered-To: bugs@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 978F517ADDA for ; Thu, 7 Nov 2019 21:44:40 +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) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 478H483cHSz4QLR for ; Thu, 7 Nov 2019 21:44:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 609C41C37A for ; Thu, 7 Nov 2019 21:44:40 +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 xA7Lieql021277 for ; Thu, 7 Nov 2019 21:44:40 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id xA7LienM021276 for bugs@FreeBSD.org; Thu, 7 Nov 2019 21:44:40 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: bugs@FreeBSD.org Subject: [Bug 241792] dhclient default route not working when given a /32 netmask Date: Thu, 07 Nov 2019 21:44:40 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 12.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: sigsys@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: 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-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Nov 2019 21:44:40 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D241792 Bug ID: 241792 Summary: dhclient default route not working when given a /32 netmask Product: Base System Version: 12.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: sigsys@gmail.com There's a certain VM where autoconfiguration via DHCP works with Linux but = not FreeBSD. I have no information on how this VM is setup apart that it's hos= ted with KVM/QEMU. The DHCP server sends a lease with a /32 netmask. This makes adding the default route fail since it is not reachable via any interface. Linux's dhclient-script seem to usually have a special case for that and explicitly adds an interface route to the router's address. FreeBSD's dhclient-script has a special case for when the router address is= the same as the leased address, but not when it's a different address that does= n't fall in the interface's subnet. With this change, DHCP just works on this VM: Index: sbin/dhclient/dhclient-script =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- sbin/dhclient/dhclient-script (revision 354408) +++ sbin/dhclient/dhclient-script (working copy) @@ -173,6 +173,9 @@ if [ "$new_ip_address" =3D "$router" ]; then route add default -iface $router >/dev/null 2>&1 else + if [ "$new_subnet_mask" =3D "255.255.255.25= 5" ]; then + route add "$router" -iface "$interf= ace" >/dev/null 2>&1 + fi route add default $router >/dev/null 2>&1 fi fi --=20 You are receiving this mail because: You are the assignee for the bug.=