pfSense

Import a patch to fix Net_IPv6::compress("::")

Obtained from: https://github.com/phil-davis/Net_IPv6/commit/638b96a253164b65c63825c38e79812b6c5f448d
Submitted by: @phil-davis

Improve IPv4 address validation for services_dhcp

The input pattern that goes with Form_IpAddress by default allows for IPv4 and IPv6 valid characters. The back-end validation here is checking for IPv4 addresses, so it seems reasonable that the front-end input pattern checks might as well be restricted to the IPv4 valid characters. Unneeded setPattern have also been removed....

dyndns: add header processing in curl

some dyndns implementations rely on the correct HTTP header being set. the information was lost and now fixed.

Fix display advanced after input error for system_gateways_edit

Use case:
1) Edit a gateway that has no advanced settings (i.e. the Advanced section does not need to open on page load) - that works fine.
2) Modify the Gateway IP Address to something invalid like 1:2::z...

Better handle no dhcpv6 leases file

(cherry picked from commit 2355c154b7598f937ba2121429659f5676ce4d96)

Merge pull request #3204 from phil-davis/patch-6

Fix #6872 CP bandwidth 0 is no valid

The front-end validation prevents zero from being entered. "Leave empty" is the way to specify no limit.
(cherry picked from commit b7f2ebb5448f7992cceec899504bdd0a29058fb9)

Remove accidental code

Revise login hostname dispaly

Revert "Allow login hostname to be controlled via system.php"

This reverts commit cd6b99147a673b6bd0313fff55cab7eb6879608f.