From nobody Tue Dec 07 10:07:50 2021 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 EE55F18DDE34 for ; Tue, 7 Dec 2021 10:07:50 +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 4J7bZt5l55z4YnR for ; Tue, 7 Dec 2021 10:07:50 +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 A514D1DBB4 for ; Tue, 7 Dec 2021 10:07:50 +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 1B7A7oie026793 for ; Tue, 7 Dec 2021 10:07:50 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 1B7A7oYh026792 for net@FreeBSD.org; Tue, 7 Dec 2021 10:07:50 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 260260] igb(4) I35{0,4} parrent <--> vlan jumbo frame mtu mismatch Date: Tue, 07 Dec 2021 10:07:50 +0000 X-Bugzilla-Reason: 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: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: zlei.huang@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: 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 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1638871670; 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=NlwO43UM7Ivhw8O6Zb7HRSlIg8cZQRYCQy0OHM672o0=; b=iEKsNWEqfa0rPL1MI+uALOSqFjne6KeXghcX4WobqKdjlSU0d99kdLnZ8jCqxufXkK/+9v t8l/jQobJoPsDo/uHGaK7FSaOm3y1lvHJblnwydwCWyJG1TZ7kfQ0byin5U0OcGVPpplDG AMsD4O1mqfP2+tiD7ORWcKsbd/i9oc8FW2ZSav89Hw0KmZeCqjxhR+HoyONgrSFGea/0D6 YfFPbMp9lOns6paX5geaalIjF9XKTlR7dhcCWQDIrr80thQEwmgVytsXNRLGCEGiyZ+MUt UfOF+kquJ5qjn/u9xGlHxq0QDhBdQLzuA6bc6QvPrGj/MKqTkhsVOJ6BRHS3QQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1638871670; a=rsa-sha256; cv=none; b=rltYa1Ppo2bfMJ2PacIOrnlMzoGQgfTZAocjzQH8F5h8HkQw76Z0jdsFp2MPlE7ptCC8lw oxyvU+yFBIshvAWH4DDNR/btEb7TD4cBsFY6Adt0+1TMn7y3jrqbopDEyzT5ccV/Ei4a7+ +g5jE96vdOdTA2eWaA4mvjdPMp7KfKcnzGbztsOThQw6oINU39AHZHUy3wT30gz3mRZTLn Kc6TsRmqD6IcWFM0GrAWqXqG2Np26VaY9UcFjn83EIgJ6MYzepDOLMhBNnV0WxwjQfr9W5 ZB/J7xQqHXF3uUWVtbAg8FUzTlsw7WXFHc62epmFD6QGkXmQ8WTNnn3s3iE0vA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260260 --- Comment #2 from Zhenlei Huang --- So it is weird. If VLANMTU is disabled on parent interface, MTU of VLAN interface will be limited off by 4 automatically. The MTU of vlans should be 8996 in your cas= e. Try the following steps: 1. Disabling all vlan hardware offloading features in rc.conf: ifconfig_igb0=3D"mtu 9000 -vlanmtu -vlanhwtag -vlanhwfilter -vlanhwtso -vlanhwcsum up" ifconfig_igb1=3D"mtu 9000 -vlanmtu -vlanhwtag -vlanhwfilter -vlanhwtso -vlanhwcsum up" 2. reboot For the 2nd step, you could also destroy cloned interfaces and restart netif service. # ifconfig vlan0 destroy # ifconfig vlan1 destroy # ifconfig ... destroy # ifconfig lagg0 destroy # service netif restart --=20 You are receiving this mail because: You are on the CC list for the bug.=