pfSense/pfsense ac0bb6bsrc/usr/local/www diag_dns.php

Use correct variable in IP address validation check for DNS. Fixes #9543

(cherry picked from commit 912562c4d76e9b629e99d44c56b363147d9ded0d)
DeltaFile
+1-1src/usr/local/www/diag_dns.php
+1-11 files

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