OPNSense/core 3ddea14src/opnsense/mvc/app/library/OPNsense/Firewall SNatRule.php, src/www firewall_nat_out_edit.php

firewall: round-robin is for host alias nat/rdr; loosely refs #2625

This simplifies the logic for the interface redirect target
as we use :0 and push it directly to the kernel to resolve.

From pf.conf:

   Tables can also be used for the redirect address of nat and
   rdr rules and in the routing options of filter rules, but only
   for round-robin pools.
DeltaFile
+27-27src/www/firewall_nat_out_edit.php
+6-5src/opnsense/mvc/app/library/OPNsense/Firewall/SNatRule.php
+33-322 files

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