Hi Karthik,
> CHILD_SA vpn{2} established with SPIs c13091e4_i c869298c_o and TS 10.244.15.1/32 === 0.0.0.0/32
This remote traffic selector (0.0.0.0/32) doesn't look right. This
should probably be 0.0.0.0/0. Since your client config looks OK, check
how the server is configured.
Regards,
Tobias