MFC r266494:

  - Fix a bug which can make sysctl() fail when -F is specified.
  - Increase WID_IF_DEFAULT() from 6 to 8 (the default for AF_INET6) because
    we have interfaces with longer names than 6 chars like epairN{a,b}.
  - Style fixes.
MFC r266857:

  - Add rwlock to struct dadq.  A panic could occur when a large number of
    addresses performed DAD at the same time.
MFC r258580:
  Replace Sun RPC license in TI-RPC library with a 3-clause BSD license,
  with the explicit permission of Sun Microsystems in 2009.

MFC r258581, 258582:
  Replace Sun Industry Standards Source License for Sun RPC code with a
  3-clause BSD license as specified by Oracle America, Inc. in 2010.
  This license change was approved by Wim Coekaerts, Senior Vice
  President, Linux and Virtualization at Oracle Corporation.

MFC r259117, 259118:
  Replace Sun RPC license with a 3-clause BSD license.  This license change
  was approved in 2010 by Wim Coekaerts, Senior Vice President, Linux and
  Virtualization at Oracle Corporation.

MFC r259417:
  Replace Sun RPC license for TI-RPC library with a 3-clause BSD license,
  with the explicit permission of Sun Microsystems in 2009.
  The code in question in this file was copied from lib/libc/rpc/pmap_getport.c.
MFC r256695:
  - Add relative specification in expiration time.
  - Add proto3 option for RTF_PROTO3.
  - Use %lu for members of struct rt_metrics.
MFC r256715:
  Use long explicitly for the time difference.
MFC r257036:

  Return 0 if:

    1. "-u N" specified, no -f, and mdN found,
    2. no -u, "-f /pathname" specified, and mdN associated with /pathname found,
    3. "-u N" specified, "-f /pathname" specified, and both of them found,
    4. "-l" specified and no -f,
    5. "-l" specified, "-f /pathname" specified, and /pathname found.

  otherwise return -1.
MFC r266177:

  - Do not override sin6_scope_id in LLA when it is already set to non-zero.
    This fixes destination list in output of netstat -r.
  - Plug a memory leak.
  - Add RTM_VERSION check.
MFC r265225:

  Move configuration of IPv6 NDP flags to a point before handling ifconfig_IF.
  This fixes a race that a non-IPv4 interface can get an EUI64 LLA even if it
  has IFDISABLED nd6 flag at boot time.
MFC r266248:

  Cancel DAD for an ifa when the ifp has ND6_IFF_IFDISABLED as early as
  possible and do not clear IN6_IFF_TENTATIVE.  If IFDISABLED was accidentally
  set after a DAD started, TENTATIVE could be cleared because no NA was
  received due to IFDISABLED, and as a result it could prevent DAD when
  manually clearing IFDISABLED after that.
MFC r266267, r267636:

  Fix an issue in range specification handling when a "-foo" is specified in
  ifconfig_IF_aliasN.
MFC r269054:

  Fix EtherIP.  TOS field must be initialized when the inner protocol is
  PF_LINK, and multicast/broadcast flag should always be dropped because
  the outer protocol uses unicast even when the inner address is not for
  unicast.  It had been broken since r236951 when gif_output() started to
  use IFQ_HANDOFF().
MFC r270234:

  Recover sin6_scope_id of gateway addresses in riprecv() by using the if_index
  where a RIP packet was received.  This fixes a bug which prevented gateway
  addresses in fe80::/64 from being added.
MFC r270780:
  Fix rc.d/gssd script to define the default values in a standard way.

MFC r270781:
  - Add a warning message when an IPv6 address is specified with no prefixlen.
  - Use a parameter argument in jls(8) instead of doing grep.
MFC r270782:

  Restructure rc.d scripts for kerberos5 daemons:

  - Rename $kerberos5_server_enable with $kdc_enable and rename
    rc.d/kerberos with rc.d/kdc.

  - Rename $kadmin5_server_enable with $kadmind_enable.

  - Rename ${kerberos5,kpasswdd}_server with ${kdc,kpasswdd}_program.

  - Fix rc.d/{kadmind,kerberos,kpasswdd,kfd} scripts not to change variables
    after load_rc_config().

  - Add rc.d/ipropd_master and rc.d/ipropd_slave scripts.  These are
    for iprop-master(8) and iprop-slave(8).  Keytab used for iprop service is
    defined in ipropd_{master,slave}_keytab (/etc/krb5.keytab by default).

  - Add dependency on rc.d/kdc to SERVERS.  rc.d/kdc must be invoked as early
    as possible before scripts divided by rc.d/SERVERS.

  Note that changes to rc.d/{kdc,kpasswdd,kadmind} are backward-compatible
  with the old configuration variables:
  ${kerberos5,kpasswdd,kadmin5}_server{,_enable,_flags}.
MFC r270783:

  Return false status only when adding a route is failed.  It could
  erroneously return false due to an afexists() check loop in routing_start().
MFC r270836:

  Use ipv6_prefer when at least one ifconfig_IF_ipv6 is configured.
MFC r271145:

  Fix a bug which prevented mount.fstab parameter from being converted
  when jail_JID_devfs_enable=NO.
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.