MFC r271410:

  Fix header output when -P is specified and (ncpus - 1) != maxid.
MFC r271411:

  Fix a bug which could break extended attributes in a dump output.
  This occurred when a file was >892kB long and had a large data (>1kB)
  in the extended attributes.
MFC r271545, 271610:
  Make net.inet.ip.sourceroute, net.inet.ip.accept_sourceroute, and
  net.inet.ip.process_options vnet-aware.
MFC r271628:
  Use generic SYSCTL_* macro instead of deprecated SYSCTL_VNET_*.
MFC r271663:
  Fix a typo; master server for iprop service should be singular.
MFC r271909:
  Revert changes in r269180.  It could cause -c N option to enter an
  infinite loop if no reply packet is received.
MFC r271919:

  Fix a bug which could make routed(8) daemon exit by sending a special RIP
  query from a remote machine, and disable accepting it by default.  This
  requests a routed(8) daemon to dump routing information base for debugging
  purpose.  An -i flag to enable it has been added.
MFC r271921:

  Fix a typo.
MFC r272393:

  Resurrect set_rcvar() as a function to define a rc.conf variable.
  It defines a variable and its default value in load_rc_config() just after
  rc.conf is loaded.  "rcvar" command shows the current and the default values.