OPNSense/core ce41408src/etc/inc interfaces.inc, src/www system_advanced_network.php

interfaces: multiple type DHCP DUID support and generation; closes #2602

(cherry picked from commit d46d2a6edccae8555ce16be374f33868093940bd)
DeltaFile
+132-42src/www/system_advanced_network.php
+7-5src/etc/inc/interfaces.inc
+139-472 files

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