diff --git a/docker.sh b/docker.sh
index b678e62..1354636 100644
--- a/docker.sh
+++ b/docker.sh
@@ -70,9 +70,9 @@ if [ `echo ${containers} | wc -c` -gt "1" ]; then
 			add_to_docker_isolation ${DOCKER_NET_INT} ${DOCKER_INT}
 
 			for net in `docker network ls | awk '{ print $2 }' | grep -Ev "bridge|host|null|ID|${netmode}"`; do
-				DINT="br-$(docker network inspect -f '{{.Id}}' ${net} | cut -c -12)"
+				dint="br-$(docker network inspect -f '{{.Id}}' ${net} | cut -c -12)"
 
-				add_to_docker_isolation ${DOCKER_NET_INT} ${DINT}
+				add_to_docker_isolation ${DOCKER_NET_INT} ${dint}
 			done
 
 			add_to_forward ${DOCKER_NET_INT}
@@ -100,11 +100,11 @@ if [ `echo ${containers} | wc -c` -gt "1" ]; then
 
                                 iptables -t nat -A POSTROUTING -s ${ipaddr}/32 -d ${ipaddr}/32 -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j MASQUERADE
 
-                                if [ $src_ip == "0.0.0.0" ]; then
-                                        iptables -t nat -A DOCKER ! -i ${DOCKER_NET_INT} -p ${dst_proto} -m ${dst_proto} --dport ${src_port} -j DNAT --to-destination ${ipaddr}:${dst_port}
-                                else
-                                        iptables -t nat -A DOCKER -d ${src_ip}/32 ! -i ${DOCKER_NET_INT} -p ${dst_proto} -m ${dst_proto} --dport ${src_port} -j DNAT --to-destination ${ipaddr}:${dst_port}
-                                fi
+				iptables_opt_src=""
+				if [ ${src_ip} != "0.0.0.0" ]; then
+					iptables_opt_src="-d ${src_ip}/32 "
+				fi
+				iptables -t nat -A DOCKER ${iptables_opt_src}! -i ${DOCKER_NET_INT} -p ${dst_proto} -m ${dst_proto} --dport ${src_port} -j DNAT --to-destination ${ipaddr}:${dst_port}
                         done
                 fi
         done