Merge r256537 from head:
    Make getutxent(3) more robust against bad utx.log files. Whenever we read
  zeroes, don't stop processing the file, but read until its end or valid
  data.

  In collaboration with:	ed

Approved by:	re (kib)
Merge r256824 from head:
  Provide a working example line for an interface with 1 address running
  with CARP.

  Currently, we've got a problem that interface isn't IFF_UP at the time
  we assign it a redundant address, and the latter gets stuck in INIT state.
  Additional SIOCSIFFLAGS from ifconfig(8) kicks it to a working state.

  A proper fix is kernel side and appeared to be non-trivial, not to be
  checked in before 10.0-RELEASE.

  Submitted by:   Ole Myhre <ole.myhre dataoppdrag.no>

Approved by:	re (kib)