@Pattern(regexp = "(((128|192|224|240|248|252|254|255)\\.0\\.0\\.0)|(255\\.(0|128|192|224|240|248|252|254|255)\\.0\\.0)|(255\\.255\\.(0|128|192|224|240|248|252|254|255)\\.0)|(255\\.255\\.255\\.(0|128|192|224|240|248|252|254|255)))", message = "Invalid netmask")
@Pattern(regexp = "((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)", message = "Invalid ip address")
@Pattern(regexp = "[a-f0-9A-F]{12}", message = "Invalid mac address")