On 9/4/23 8:17 AM, A. F. Cano wrote:
$ sudo firewall-cmd --permanent --list-all-policies
allow-host-ipv6 (active)
   priority: -15000
   target: CONTINUE
   ingress-zones: ANY
   egress-zones: HOST
   services:
   ports:
   protocols:
   masquerade: no
   forward-ports:
   source-ports:
   icmp-blocks:
   rich rules:
         rule family="ipv6" icmp-type name="neighbour-advertisement" accept
         rule family="ipv6" icmp-type name="neighbour-solicitation" accept
         rule family="ipv6" icmp-type name="router-advertisement" accept
         rule family="ipv6" icmp-type name="redirect" accept

Please run the following commands:

$ sudo firewall-cmd --permanent --new-policy int_to_ext_fwd
$ sudo firewall-cmd --permanent --policy int_to_ext_fwd --add-ingress-zone 
internal
$ sudo firewall-cmd --permanent --policy int_to_ext_fwd --add-egress-zone 
external
$ sudo firewall-cmd --permanent --policy int_to_ext_fwd --set-priority 100
$ sudo firewall-cmd --permanent --policy int_to_ext_fwd --set-target ACCEPT

Then you should see the new policy listed:

$ sudo firewall-cmd --permanent --list-all-policies
allow-host-ipv6 (active)
  priority: -15000
  target: CONTINUE
  ingress-zones: ANY
  egress-zones: HOST
  services:
  ports:
  protocols:
  masquerade: no
  forward-ports:
  source-ports:
  icmp-blocks:
  rich rules:
        rule family="ipv6" icmp-type name="neighbour-advertisement" accept
        rule family="ipv6" icmp-type name="neighbour-solicitation" accept
        rule family="ipv6" icmp-type name="router-advertisement" accept
        rule family="ipv6" icmp-type name="redirect" accept

int_to_ext_fwd (active)
  priority: 100
  target: ACCEPT
  ingress-zones: internal
  egress-zones: external
  services:
  ports:
  protocols:
  masquerade: no
  forward-ports:
  source-ports:
  icmp-blocks:
  rich rules:

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