[strongSwan] Problems with IKEv1 Dead-Peer-Detection in 5.0.1

[Martin Willi]

> Please, look at server log, i can't paste it because it verbose (4.5M):

Please use the standard loglevels to debug in a first step. They are
usually sufficient, but way easier to review.

> This user DPD problem start at 13:35 (1 hour difference between server 
> log and client log)

>From what I can see, strongSwan does not have a Main Mode anymore for
these DPDs. It tried to rekey the quick mode around 13:32, but the
client did not respond. Hence it closed the SA.

Regards
Martin