Ok thanks for the info i always find mtu confusing as i thought generally it was referring to ip mtu..... while layer2 headers vlans and layer 2.5 headers such as mpls labels cw etc...would be outside the ip mtu...
Thanks again On Wednesday, 22 April 2020, Chris Cappuccio <ch...@nmedia.net> wrote: > Tom Smyth [tom.sm...@wirelessconnect.eu] wrote: > > Hi Chrisz, > > > > 4 bytes for the vlan header .. have you tried increasing the parent > > intetface mtu by 4bytes > > > > IFCAP_VLAN_MTU is a direct bypass for this. "hardmtu" on the parent > interface > is perhaps more interesting as it will limit everything including these > encapsulations > > -- Kindest regards, Tom Smyth.