(cherry picked from commit d0a94a5b)

CARP, add option "Disable preempt", move preempt to later boot stage. for https://github.com/opnsense/core/issues/1557

(cherry picked from commit 75967381)
(cherry picked from commit 4c01a935)
(cherry picked from commit f399f3fa)
(cherry picked from commit 15f48662)

(cherry picked from commit 0b89f1d0)

(cherry picked from commit bed87f3d)
(cherry picked from commit 39628cd7)

(cherry picked from commit 59249e5c)

(cherry picked from commit 82032a73)
(cherry picked from commit fae2e48f)

(cherry picked from commit 89d73f69)

(cherry picked from commit 2e096b3e)

Includes a fix by Alexander Graf for IPv6 SSL cipher configuration.

(cherry picked from commit c144e247)
(cherry picked from commit 4c472610)

(cherry picked from commit f499c3dd)

(cherry picked from commit ce8ef993)

(cherry picked from commit 760af0b6)
(cherry picked from commit 41aef105)

(cherry picked from commit b306aaae)
(cherry picked from commit 0f551f09)
(cherry picked from commit 044d519f)

(cherry picked from commit a14da189)
(cherry picked from commit 2b0cb7be)

(cherry picked from commit 42214674)
(cherry picked from commit c1f018b1)
(cherry picked from commit f3ed9ca3)

configd, templates, add sortDictList to helpers. closes https://github.com/opnsense/core/issues/1641

example usage:
{%  for item in helpers.sortDictList(OPNsense.ConfigObject, 'description') %}
    {{item.description}}
{%  endfor %}

(cherry picked from commit e4082599)

In those cases the next firmware update with a base set helps, or
running this manually:

    # opnsense-update -fb

(cherry picked from commit f7e92beb)

(cherry picked from commit c7d8d109)
(cherry picked from commit 1c037c47)

(cherry picked from commit 983b11f3)

(cherry picked from commit a84f3c0d)

(cherry picked from commit dd0d8ed8)

According to: https://redmine.pfsense.org/issues/3669

(cherry picked from commit 575f804a)
(cherry picked from commit ad5ad50e)

(cherry picked from commit 15f48662)
(cherry picked from commit f8547f27)
(cherry picked from commit e438bfc9)
(cherry picked from commit 23c2cce6)

(cherry picked from commit c2e0d912)

PR: https://forum.opnsense.org/index.php?topic=5140.0
(cherry picked from commit 9c88e641)

(cherry picked from commit 1146fb24)

An API exception occured
Error at /usr/local/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc:92 - Methods with the same name as their class will not be constructors in a future version of PHP; updatedns has a deprecated constructor (errno=8192)
(cherry picked from commit 7560c617)

PR: https://forum.opnsense.org/index.php?topic=5120.0
(cherry picked from commit 45707768)

PR: https://forum.opnsense.org/index.php?topic=5099.0
(cherry picked from commit 9939ff28)