Date: Tue, 07 Dec 2021 10:07:50 +0000
From: bugzilla-noreply@freebsd.org
To: net@FreeBSD.org
Subject: [Bug 260260] igb(4) I35{0,4} parrent <--> vlan jumbo frame mtu mismatch
Message-ID: <bug-260260-7501-4cwdF299pR@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-260260-7501@https.bugs.freebsd.org/bugzilla/>
References: <bug-260260-7501@https.bugs.freebsd.org/bugzilla/>
next in thread | previous in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260260 --- Comment #2 from Zhenlei Huang <zlei.huang@gmail.com> --- 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.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-260260-7501-4cwdF299pR>