private void buildMatchRemoteIp(TrafficSelector.Builder sBuilder, IpPrefix remoteIpPrefix, OpenstackSecurityGroupRule.Direction direction) { if (remoteIpPrefix != null && !remoteIpPrefix.getIp4Prefix().equals(IP_PREFIX_ANY)) { if (direction.equals(OpenstackSecurityGroupRule.Direction.EGRESS)) { sBuilder.matchIPDst(remoteIpPrefix); } else { sBuilder.matchIPSrc(remoteIpPrefix); } } }