[strongSwan] StrongSwan not responding to DPD messages when modeconfig=push.

[Tobias Brunner]

Hi,

> Sep 24 12:58:15 router6654A1 charon:<info> 16[ENC] parsed TRANSACTION
> request 3221496499 [ HASH CPRQ(U_SPLITINC U_LOCALLAN U_BANNER
> U_SAVEPWD U_NATTPORT VER U_FWTYPE) ]

Your client seems to send a Mode Config request after strongSwan already
pushed config options.  strongSwan can't handle that, it expects either
push or pull mode (as configured) but not both.

Regards,
Tobias