} else {
Pair<String, Integer> cidrInfo = NetUtils.getCidr(network.getCidr());
sub = netBridge.addDhcpSubnet();
sub.subnetLength(cidrInfo.second());
sub.subnetPrefix(cidrInfo.first());
sub.defaultGateway(network.getGateway());
List<String> dcs = new ArrayList<String>();
dcs.add(dest.getDataCenter().getDns1());
sub.dnsServerAddrs(dcs);