pfSense

Nested alias IDN fix. Issue #10968

Style fixes

Add missing parameter to get_dpinger_status() call

Prevent possible race condition, fixes #9450

Instead of calling get_dpinger_status() again in the code handling dpinger
alarms, save the original alarm status in rc.gateway_alarm to a file, then
read the status from the file.

Minor text fix. Issue #10546

No need to log the PID, it's added to the logs anyways.

Add gateway substatus. Fixes #10546

Update return_gateways_status to return a substatus as well as the existing status.

status changed to be one of online or down.
substatus can be one of none, down, highloss, highlatency, loss, latency, or force_down
...

Clean NDP table button. Implements #10975

VLAN MTU improvements. Issue #9154

Interface assignment fix for PPP interfaces. Fixes #10240

Fix #10680: Rewrite cache system in interfaces.inc

Change it to not invalidate cache when not needed. Makes boot much faster
when we have many VLANs