969e69711e
In contrast to OpenBSD we enable jumbo frame support depending on MTU setting (like done for xmac). Approved by: pjd (mentor) Obtained from: OpenBSD if_sk.c r1.52 (YU_SMR_MFL_JUMBO flag) Tested by: Heinz Knocke <knockefreebsd at o2 dot pl> MFC after: 5 days