DNS: Check server A record against public facing IP

#!/bin/bash

# checks ip of darkglass.net server in DNS versus via public call
# probably don't have to note that this could easily become a problem.

DNSADDRESS=$(dig @ns1mpz.name.com darkglass.net A +short)
PUBLICIP=$(wget http://ipecho.net/plain -O - -q ; echo)

if [ "$DNSADDRESS" == "$PUBLICIP" ]; then
    echo "DGS OK!"
else
    echo "DGS IP mismatch!"
fi