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

[Tobias Brunner]

Hi,

>     1. Why does strongswan wait for the response in spite of assigning
> the IP requested by client ?

You configured `modeconfig=push`, so strongSwan pushed config attributes
to the client and waits for a response.  If that's not what the client
expects change the config to `modeconfig=pull` so the client is expected
to be the one requesting the attributes.

>     2. Sometimes , shrew soft client is reporting "Invalid message from
> the gateway" for this transaction request HASH CPS(ADDR DNS)  and
> closing the connection ?

Obviously, the two peers don't agree on the mode to be used.

>     3. Is this an interoperability issue ? Is Shrew soft client not
> interoperable with Mode-Config standard  ?

No, a misconfiguration.

Regards,
Tobias