1/* Reverse IP address. 2 Copyright (C) 2006, 2007, 2008, 2009 Jan Rafaj, Sergey Poznyakoff 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 16 17module 'revip'. 18 19func revip(string ip) 20 returns string 21do 22 return inet_ntoa(ntohl(inet_aton(ip))) 23done 24