Rustdesk servers run, but fail to listen on any active address, even on localhost

Describe the bug
In my setup, rustdesk fails to listen on any interface, even on localhost

[root@rustdesk ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: eth0@if317: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 02:00:00:00:01:40 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 192.168.1.140/24 metric 1024 brd 192.168.1.255 scope global dynamic eth0
       valid_lft 5856sec preferred_lft 5856sec
[root@rustdesk ~]# netstat -panoe | grep 2111
tcp6       0      0 :::21118                :::*                    LISTEN      0          235689190  518/hbbs             off (0.00/0/0)
tcp6       0      0 :::21119                :::*                    LISTEN      0          235685762  746/hbbr             off (0.00/0/0)
tcp6       0      0 :::21116                :::*                    LISTEN      0          235689188  518/hbbs             off (0.00/0/0)
tcp6       0      0 :::21117                :::*                    LISTEN      0          235685761  746/hbbr             off (0.00/0/0)
tcp6       0      0 :::21115                :::*                    LISTEN      0          235689189  518/hbbs             off (0.00/0/0)
udp6       0      0 :::21116                :::*                                0          235689187  518/hbbs             off (0.00/0/0)
[root@rustdesk ~]# systemctl restart rustdesksignal
[root@rustdesk ~]# systemctl restart rustdeskrelay
[root@rustdesk ~]# netstat -panoe | grep 2111
tcp6       0      0 :::21118                :::*                    LISTEN      0          235874030  974/hbbs             off (0.00/0/0)
tcp6       0      0 :::21119                :::*                    LISTEN      0          235885435  988/hbbr             off (0.00/0/0)
tcp6       0      0 :::21116                :::*                    LISTEN      0          235874028  974/hbbs             off (0.00/0/0)
tcp6       0      0 :::21117                :::*                    LISTEN      0          235885434  988/hbbr             off (0.00/0/0)
tcp6       0      0 :::21115                :::*                    LISTEN      0          235874029  974/hbbs             off (0.00/0/0)
udp6       0      0 :::21116                :::*                                0          235874027  974/hbbs             off (0.00/0/0)
[root@rustdesk ~]# 

Describe the environment

• Host machine: Fedora 42 LXC container running on Proxmox VE, with IPv6 disabled using sysctl.
• Install environment: install script
• Or if you're running the plain binary: install script, untouched
• In any case, you have to specify the version in use

[root@rustdesk ~]# /opt/rustdesk/hbbr -V
hbbr 1.1.14
[root@rustdesk ~]# /opt/rustdesk/hbbs -V
hbbs 1.1.14
[root@rustdesk ~]# 

How to Reproduce the bug

1. Run the install script according to the documentation.
2. Disable ipv6 on all interfaces using sysctl
3. Restart rustdesk servers

Expected behavior
Rustdesk servers should listen on active interfaces, ie: localhost and eth0, using IPv4, not the IPv6 stack that is not in use.
Optimal behavior
Allow users to configure on which interfaces and addresses the servers listen.

Start by reproducing the behavior with the install script, hbbs and hbbr 1.1.14 binaries, and IPv6 disabled through sysctl. Inspect the server listener entry points and verify the result with netstat; done means hbbs and hbbr listen on the active IPv4 addresses, including localhost and eth0.