Chapter 25. Networking

The keyingtries libreswan option set to 0 is mistakenly interpreted as 1

The default value of keyingtries is 0 which means 'retry forever'. Due to this bug, if a temporary problem occurs during an active negotiation, the connection will not be attempted more than once.
To work around this problem, set the keyingtries option to a sufficiently large number. (BZ#1289498)