(cherry picked from commit 353f9e22)

(cherry picked from commit 91a6e982)

Spotted by: @fabianfrz

(cherry picked from commit 1b03f583)

(cherry picked from commit 45f297ad)

(cherry picked from commit 1961849d)

(cherry picked from commit 162fdcb2)

(cherry picked from commit b06b01a0)

(cherry picked from commit 94e16143)

(cherry picked from commit 1f5b8fa0)

(cherry picked from commit b383bdd4)

(cherry picked from commit 94a2da60)

(legacy, ipsec) fix ipsec diag page, connect to vici, drop smp support, add privilege separation using configd

(cherry picked from commit 5dcae9cf)

(cherry picked from commit 5f34f72c)

(cherry picked from commit 92948294)

(cherry picked from commit 10d0ebf8)

(cherry picked from commit 73f8b8b6)

(cherry picked from commit 441acc41)

(cherry picked from commit 6ae824fc)

(cherry picked from commit 966266e7)

(cherry picked from commit 3f71c2a7)

(cherry picked from commit 911d0c83)

(cherry picked from commit 44035832)

(cherry picked from commit 152e392b)

(cherry picked from commit 0cadf36d)

First step is to switch the current status page away from legacy smp.
(work in progress)

(cherry picked from commit a8762386)

(cherry picked from commit 249c74c6)

(cherry picked from commit 48995d12)

(cherry picked from commit c10fb545)

(cherry picked from commit 8da32378)

(cherry picked from commit 154b9a29)

(cherry picked from commit c73d86fe)

(legacy) kill "interface cache", let's not try to cache things that may change during the session... all for saving a ifconfig call.

related to, https://github.com/opnsense/core/issues/451 (try to avoid smilar issues)

(cherry picked from commit 6d916416)

(cherry picked from commit 50dc2e57)

(cherry picked from commit fdc754e4)

(cherry picked from commit ca4cf553)

(legacy) style cleanup rc.newwanip, don't try to loop back to configd if not needed. loosly related to https://github.com/opnsense/core/issues/451

(cherry picked from commit 38d70ed7)

(legacy) remove caching of filter interfaces, likely suspect of https://github.com/opnsense/core/issues/451

(cherry picked from commit 288bc8cb)

(legacy) fixup code style for filter.inc before performing actual change (missing curly braces, indents, etc)

(cherry picked from commit f94ecfa3)

(cherry picked from commit 355f08fb)