pfSense

Make IPv4/IPv6 validation on IPSec

It should fix #2769

Fix indent and blanks at EOL

Don't forget the wizard...

Allow specifying multiple local/remote networks for OpenVPN separated by commas. While I'm here, fix up the IPv6 tunnel/remote/local network input validation. Simplify some code using functions.

Ensure DHCP main range, pools ranges and static IP addresses don't overlap each other. It should fix #2773

Move is_inrange() to util.inc and rename it to is_inrange_v6()

Fix logic of v6 version of is_inrange()

Move is_inrange() to util.inc and rename it to is_inrange_v4()

Fix logic of is_inrange()

Remove call-time pass-by-reference