initializes it to ETHER_HDR_LEN so we have to override it after calling ether_ifattch(). While I'm here remove setting if_mtu value, it's initialized in ether_ifattach().
initializes it to ETHER_HDR_LEN so we have to override it after calling ether_ifattch(). While I'm here remove setting if_mtu value, it's initialized in ether_ifattach().