IPsec VPN crashes completely and reenables only on service restart

[mwiora]

Hi @all,

I've set up a site2site IPsec VPN connection and this seem so to be working like a charm - up to one hour.
Then the Connection gets lost and it is not possible to reenable the connection through reinitiating via "status overview".

The log reports something like:
"no matching CHILD_SA config found" and "INVALID ID"

looking for both sides configuration seems everything fine and after restarting the IPsec service everything works great again for one hour....

Any Ideas which Log I should enabled and where do I look for the right lines?
Cheers,
Matthias