This reverts commit 6eda8aec.

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

If configd doesn't respond the JSON is not available, which we really
need a wrapper for doing this fallback all the time and maybe even
with error reporting inside that returned array.

OpenVPN servers using udp6 or tcp6 fail to start, closes https://github.com/opnsense/core/issues/1576

Seems like years ago when PHP 5.5 had trouble iterating non-
existing arrays PHP 7 introduced a new problem with nodes
that seem to be set but no longer available, yielding:

    PHP Warning:  OPNsense\Base\FieldTypes\InterfaceField::eventPostLoading():
      Node no longer exists in /usr/local/opnsense/mvc/app/models/OPNsense/Base/FieldTypes/InterfaceField.php on line 132

The same thing happened in the acme-client plugin and was
allegedly fixed with the following code.  Even if this doesn't
help it is harmless and we'll see through the crash reporter
soon enough.

Now that tools can build several versions of the same software, we
can have -devel depend on a different one than the release.  This
helps with prebuilt testing and easier testing for interested parties.

Should your manual upgrade break at the moment, the easiest solution is:

    # make upgrade CORE_OPENVPN=23

dhcp server / static leases, issue with loading settings into form. closes https://github.com/opnsense/core/issues/1568

Fix autocomplete, autocapitalize and autocorrect in Captive Portal login form

squid.conf: reorder pre-auth plugins and local auth settings

Revert "menu, replace "str_replace(array(".", "*","?", "@"), array("\.", ".*","\?", "\@"....) for preg_quote, as suggested by @fabianfrz"

This reverts commit 66586110.

menu, replace "str_replace(array(".", "*","?", "@"), array("\.", ".*","\?", "\@"....) for preg_quote, as suggested by @fabianfrz

... the save button can still be useful.

This reverts commit 36af267d.
Looks like dhcp restart already does this by default now...

This semicolon is not needed but seems also not to break the config.