OPNSense/core d16b0b8. plist, src/etc/inc interfaces.inc

CARP, kill vague advskew legacy hook when starting in maintenance mode (virtualip_carp_maintenancemode), closes https://github.com/opnsense/core/issues/3671

(cherry picked from commit 28cc0dc5f4f2600098267ed76b165bb1067a91fc)
(cherry picked from commit fe11354c82028d0aa4f8458ef0d66a495096619d)
DeltaFile
+10-0src/etc/rc.syshook.d/early/98_carp_maintenance
+1-6src/etc/inc/interfaces.inc
+1-0plist
+12-63 files

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