vyos@Latest-zones:~$ show config comm | grep ipv6
set firewall ipv6 name WAN_to_LOCAL_v6 rule 10 action 'accept'
set firewall zone LOCAL from WAN firewall ipv6-name 'WAN_to_LOCAL_v6'
vyos@Latest-zones:~$ show firewall ipv6 
Rulesets ipv6 Information

---------------------------------
ipv6 Firewall "name WAN_to_LOCAL_v6"

Rule     Action    Protocol      Packets    Bytes  Conditions
-------  --------  ----------  ---------  -------  ------------
10       accept    all               613    34456  accept
default  drop      all                 0        0

vyos@Latest-zones:~$ show firewall ipv6 
Possible completions:
  <Enter>               Execute the current command
  forward               Show IPv6 forward firewall ruleset
  input                 Show IPv6 input firewall ruleset
  ipv6-name             Show IPv6 custom firewall chains
  output                Show IPv6 output firewall ruleset

      
vyos@Latest-zones:~$ show firewall ipv6 ipv6-name 
Possible completions:
  <text>                Show IPv6 custom firewall chains

      
vyos@Latest-zones:~$