Grails check if remote is localhost

IsRemoteLocalhost

def isLocalhost(String ip) {

  	def localIps = []
		def networkInterfaces

		try {
			networkInterfaces = NetworkInterface.getNetworkInterfaces()
			networkInterfaces = networkInterfaces?.toList()
		} catch(SocketException e) {
		}

		if (networkInterfaces) {
			networkInterfaces.each { ni ->
				def interfaceIps = ni.getInetAddresses()
				interfaceIps = interfaceIps?.toList()

				if (interfaceIps)
					interfaceIps.each { localIps << it.getHostAddress() }
			}
		}

		// if 0:0:0:0:0:0:0:1%0
		// https://issues.apache.org/jira/browse/TAP5-1836
		if (ip == '0:0:0:0:0:0:0:1%0' || localIps.contains(ip))
			return true

		return false
}