Setting ksk-lifetime option to infinity is not possible
The DNSSEC policy option `ksk-lifetime` defaults to infinity.
I wanted to set this option explicitly to infinity but this seems not possible.
I tried `0`, `0d`, `infinity`, `-1`.
I guess if one wants "infinity" he must not set the option at all.
I would suggest to allow setting the default infinity option explicitly. If so, please also make it clear in the documentation what that value would be.
issue