diff --git a/deployment/setup.sh b/deployment/setup.sh
index e481852..3af7bea 100644
--- a/deployment/setup.sh
+++ b/deployment/setup.sh
@@ -4,8 +4,7 @@
 [ -z "$DDNS_DOMAINS" ] && echo "DDNS_DOMAINS not set" && exit 1;
 [ -z "$DDNS_PARENT_NS" ] && echo "DDNS_PARENT_NS not set" && exit 1;
 [ -z "$DDNS_DEFAULT_TTL" ] && echo "DDNS_DEFAULT_TTL not set" && exit 1;
-
-DDNS_IP=$(curl icanhazip.com)
+[ -z "$DDNS_DEFAULT_IP" ] && echo "DDNS_DEFAULT_IP not set" && exit 1;
 
 for d in ${DDNS_DOMAINS//,/ }
 do
@@ -37,7 +36,7 @@ $d		IN SOA	${DDNS_PARENT_NS}. root.${d}. (
 				86400      ; minimum (1 day)
 				)
 			NS	${DDNS_PARENT_NS}.
-			A	${DDNS_IP}
+			A	${DDNS_DEFAULT_IP}
 \$ORIGIN ${d}.
 \$TTL ${DDNS_DEFAULT_TTL}
 EOF