Revision 336440

MFC r336195: unbreak dhclient(8) option 26 processing

  Make dhclient(8) verify if new MTU (option 26) differs from current one
  and skip unneeded MTU change. This check eliminates infinite loop
  of MTU change / link flap / lease verification / MTU change / link flap etc.
  in case of some NIC drivers like em(4) or igb(4).

PR:		229432
Approved by:	mav (mentor)