It is caused by iptables, and the solution is here at the end of the page: http://www.fail2ban.org/wiki/index.php/Fail2ban_talk:Community_Portal
"fail2ban.action.action ERROR on startup/restart I had multiple fail2ban.action.action ERROR on startup/restart. It seems there was a "race" condition with iptables. I solved the problem completely on my system by editing /usr/bin/fail2ban-client and adding a time.sleep(0.1) def __processCmd(self, cmd, showRet = True): beautifier = Beautifier() for c in cmd: time.sleep(0.1) beautifier.setInputCmd(c) " adding " time.sleep(0.1)" worked like a charm for me. it extends the restart time by 20 or so seconds, but works great. -- fail2ban not execute command to start jail https://bugs.launchpad.net/bugs/403808 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs