04-19-2019 07:10 AM
From logs I found 10.90.0.200 did not match as Peer Identification, so I put that IP in IKE Gateway property as Peer Identification and my Public IP as Local Identification and problem got resolved.
Customer is saying I should not see this IP because their firewall is behind NAT and this is internal IP of their VPN gateway. I am still not sure why but tunnel came up.
I don't have this issue anymore.