pfSense

Fix Cloudflare support for Dynamic DNS Updates

Backport of #1812 to RELENG_2_2

The current implementation isn't working due to API change. Credits: det0nat3 @ https://forum.pfsense.org/index.php?topic=87436.msg534817#msg534817

Merge pull request #1894 from doktornotor/patch-6

Make the openvpn-server IP address consistent with CSC overrides behavior

Merge pull request #1837 from phil-davis/patch-5

Merge pull request #1811 from phil-davis/patch-10

Merge pull request #1887 from doktornotor/patch-8

Remove useless log spam. Ticket #4102

Check if our version of roll data is valid and if necessary, initialize
the database.

This fix the case where the database is not initialized because the used
field in backup file is empty.

Fix the issue #5113.

Only add 6rd rules if there is an IPv4 IP defined for the gateway,
otherwise ruleset ends up invalid. Ticket #4935

Fix incorrect netmask sent to client with static IP set in RADIUS (Bug #5129)