https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260260
--- Comment #2 from Zhenlei Huang <zlei.hu...@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 case. Try the following steps: 1. Disabling all vlan hardware offloading features in rc.conf: ifconfig_igb0="mtu 9000 -vlanmtu -vlanhwtag -vlanhwfilter -vlanhwtso -vlanhwcsum up" ifconfig_igb1="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 -- You are receiving this mail because: You are the assignee for the bug.
