ssh3 bind only ipv6

I'm running ssh3 with the following options (Arch Linux, go 1.21.5):
> ./ssh3-server -cert /etc/mycert/fullchain.pem -key /etc/mycert/privkey.pem -url-path /ssh3 -bind 0.0.0.0:444 -enable-password-login -v

But it's impossible to connect to server through ipv4 address. When I started debugging the problem, I realized that server is binding only ipv6:
> ~ # netstat -tulpan | grep 444
> udp6 0 0 :::444 :::* 3510885/./ssh3-serv

Any other configuration changes (with -bind) were unsuccessful.