Extend %iface logic to the dig test. Also fix intentation in this function

Signed-off-by: DL6ER <dl6er@dl6er.de>

advanced/Scripts/piholeDebug.sh

@@ -765,6 +765,11 @@ dig_at() {
         addresses="$(ip address show dev "${iface}" | sed "/${sed_selector} /!d;s/^.*${sed_selector} //g;s/\/.*$//g;")"
         if [ -n "${addresses}" ]; then
             while IFS= read -r local_address ; do
+                # If ${local_address} is an IPv6 link-local address, append the interface name to it
+                if [[ "${local_address}" =~ ^fe80 ]]; then
+                    local_address="${local_address}%${iface}"
+                fi
+
               # Check if Pi-hole can use itself to block a domain
                 if local_dig="$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @"${local_address}" "${record_type}")"; then
                     # If it can, show success