The file came from Scott Dale in 2007 like some of the others.
While there, also fix Deciso update from 2014->2016 in our tree.

See: https://github.com/pfsense/pfsense/commit/ab6a5cfc

(captive portal) handle transparant proxy from within ipfw, bit of a workaround for https://github.com/opnsense/core/issues/1189

While here, remove the RAM disk mention, we can cope with this now.

cleanup in services_dnsmasq_configure, remove duplicate code, for https://github.com/opnsense/core/issues/1182

We only merge chunks for loader.conf leaveraging a priority scheme
in order to be able to override standard modifications made by e.g.
core or plugins (in case of user changes).

Start to work on its scripts, but 20-console is dynamic so it needs
more work in the actual PHP code.

Discussed with: @adschellevis

Reported by: Simon Brunet

PR: https://forum.opnsense.org/index.php?topic=3684

Expand / join the descriptive text and explain floating rules a bit more.

Eventually we should move this kind of "get all attached networks" to a single and simple function, which uses legacy_get_interface_addresses() underneath. but there's still too much obscure code in this region to remove it easily