vyos@vyos# set vpn ipsec ike-group foo 
Possible completions:
   close-action Action to take if a child SA is unexpectedly closed
 > dead-peer-detection
                Dead Peer Detection (DPD)
   ikev2-reauth ikev2-reauth_help
   key-exchange IKE version
   lifetime     IKE lifetime
   mobike       Enable MOBIKE Support (IKEv2 only)
   mode         IKEv1 phase 1 mode selection
+> proposal     IKE proposal