[strongSwan] Working simple setup was working, now no packets pass

[Martin Willi]

Hi James,

> Here's the log with error...

> 08[ENC] generating IKE_AUTH response 1 [ IDr CERT AUTH CPRP(ADDR) SA TSi TSr N(AUTH_LFT) N(MOBIKE_SUP) N(ADD_4_ADDR) ]
> 08[NET] sending packet: from server.external.ip[4500] to client.external.ip[15546] (2204 bytes)
> 11[NET] received packet: from client.external.ip[15546] to server.external.ip[4500] (1916 bytes)
> 11[ENC] parsed IKE_AUTH request 1 [ IDi CERT N(INIT_CONTACT) CERTREQ IDr AUTH CPRQ(ADDR DNS) SA TSi TSr N(MOBIKE_SUP) N(ADD_4_ADDR) N(MULT_AUTH) N(EAP_ONLY) ] 
> 11[IKE] received retransmit of request with ID 1, retransmitting response

I don't see much of an error here. The client is successfully
authenticated and the SA is set up. The client retransmits the IKE_AUTH
request, most likely because the first IKE_AUTH response gets lost.

Please check where/why the message gets lost if this is reproducible,
and what the error is on the client.

Regards
Martin