5337 igb/ixgbe mishandle raw packets if cable problem
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Dan McDonald <danmcd@nexenta.com>
Reviewed by: Jason King <jason.brian.king@gmail.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Approved by: Richard Lowe <richlowe@richlowe.net>
	[illumos-gate merge]

commit b607c8a3bdb27d4fde6e3fc4bb6617a1d91bdca7
    5337 igb/ixgbe mishandle raw packets if cable problem

Conflicts:
	usr/src/uts/common/io/igb/igb_tx.c