Updog is not listening on IPv6 address

[Makebignew]

My VPS is dual stack with both ipv4&ipv6, while i successfully deployed updog,it turns out that updog is accessible only with IPv4,any attemption of acessing with IPv6 will end up with the alert says:ERR_CONNECTION_REFUSED.
And I checked netstat -tunlp,which confirms the problem,the process is only listening on 0.0.0.0,not on :: so it won't on ipv6.
Hopefully you can work this out,thanks.

[wei-er-buzheng]

在运行的时候，需要提供本机的IP地址，请问安全吗？