Wireguard VPN Disable IPV6

[treycortez]

I've been searching for a solution, but to no avail.

I have an ASUS AX86U running ASUSwrt-Merlin 3004.388.7_beta1, connecting to ProtonVPN over Wireguard.

I want to disable IPv6 only when connected to the Wireguard Client.

I have tried inserting this into the configuration file:

pull-filter ignore "ifconfig-ipv6"
pull-filter ignore "route-ipv6"

but it did nothing. Is there some way to do this, or have I missed the obvious? Or is my only solution to disable IPv6 entirely / use OpenVPN (ugh...) to disable IPv6 only when connecting to the VPN?

 

[netmik3]

Same otherwise ipv6 leaks completely

 

[ZebMcKayhan]

Is there some way to do this, or have I missed the obvious?

If you are talking about your entire lan it would be possible to block with a simple firewall rule

ip6tables -I FORWARD -i br0 -j REJECT

If you could put this rule in place when your wg client starts (userscript wgclient-start) and then remove when wg client stops (userscript wgclient-stop) you would achieve what you want.
Final problem is that fw flushes firewall when it needs rebuilding so it will need to be re-added in userscript firewall-start but only if wg client is started.

It would be possible to do.