HP-UX IPSec Version A.03.00 Administrator's Guide

ipsec_config add ikev2 Command Example
The following command modifies the default IKEv2 policy to use Diffie-Hellman group 5 or
group 2, with a higher preference for group 5:
ipsec_config add default ikev2 default -group 5,2
102 Configuring HP-UX IPSec