strongswan/testing/tests/gcrypt-ikev1-c-p/alg-serpent/hosts/moon/etc/strongswan.conf

# /etc/strongswan.conf - strongSwan configuration file

pluto {
  load = pem pkcs1 x509 gcrypt nonce hmac curl kernel-netlink
}

# pluto uses optimized DH exponent sizes (RFC 3526)

libstrongswan {
  dh_exponent_ansi_x9_42 = no
}