How to prevent using ipv6

Hi,

how can I prevent jitsi from using IPv6 addresses?

I have it running in a VM on my server behind NAT, and the only static ip address I have is an IPv4 one. Local testing has shown that clients tend to use IPv6 addresses. That works fine so far, but not every (remote) client will have an IPv6 address, and without static IPv6 addresses, I can’t open the ports in the firewall for IPv6. (IPv6 without static addresses is ridiculous and totally sucks, but I can’t help it :frowning: )

So I need to restrict jitsi from using IPv6. How can I do that?