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

# /etc/strongswan.conf - strongSwan configuration file

charon {
  load = curl pem pkcs1 gcrypt nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
  send_vendor_id = yes
}

libstrongswan {
  dh_exponent_ansi_x9_42 = no
}