[strongSwan] Connect from different public IP but same NAT IP

[Kris]

Hi, I got two iOS clients with different user name(same psk), they
both have the same NAT IP(10.1.1.9) under different pubic IP, every
time if they both try to connect to the server, the last one will kick
off the first connected one. I tried uniqueids=no or uniqueids=yes,
doesn't help.

Any idea to solve this problem?

Thanks a lot.

--
Kris