Hi, I've been having similar problems on and off for quite sometime. At one point I was receiving the same errors I am now, and after rebooting the firewall, the VPN connections worked fine.
The specific errors I'm referring to are below. I have double, triple, quadruple checked every setting, AND astaro support requested a login to check the system config which they OK'd.
The log entries are in the order they appear in the logs, the client reports the failure occuring at the first stage of phase2 IPSec with the error "Exchanging IPSec proposals failed"
The client is SSH Sentinel 1.4 build 190
---
;;discarding duplicate packet; already STATE_MAIN_R2
;;cannot respond to IPsec SA request because no connection is known for 192.168.2.0/24===x.x.x.x...x.x.x.x[C=us, ST=MN, L=x, O=x, OU=IT, CN=x, E=no@spam.com]===x.x.x.23/32
;;sending encrypted notification INVALID_ID_INFORMATION to x.x.x.x:500
;;Quick Mode I1 message is unacceptable because it uses a previously used Message ID 0xbe7a5a32 (perhaps this is a duplicated packet)
;;ERROR: recvfrom on eth1 failed; Pluto cannot decode source sockaddr in rejection: unknown source. Errno 11: Resource temporarily unavailable
My client is setup like this.
X509 Certs
*IPSec/IKE settings*
Enc. Algorithm: AES Rijndael
Integrity: SHA1 192bit
IKE GROUP: MODP 1536 (5)
*Virtual IP*
192.168.1.23/255.255.255.0
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