IP.resolve_hostname(_addresses) fails on .local addresses

[TheBlueOompaLoompa]

Tested versions

• Reproducible in v4.3.stable.official [77dcf97]

System information

Godot v4.3.stable - Freedesktop SDK 24.08 (Flatpak runtime) - Wayland - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2070 SUPER (nvidia) - Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz (8 Threads)

Issue description

When trying to resolve a .local domain, it fails. I have verified that Avahi mDNS is correctly configured on my machine, as I use it for ssh among other things.

print(IP.resolve_hostname_addresses('3dpi.local'))
# []
print(IP.resolve_hostname_addresses('google.com'))
# ["173.194.193.101", "173.194.193.102", ...]

Steps to reproduce

Use either IP.resolve_hostname or IP.resolve_hostname_addresses with a .local domain.

Minimal reproduction project (MRP)

In order to test a domain, select the node called "Node" in the scene panel and change the "Domain" property.

Resolve Hostname Issue.zip

[Faless]

I'm unable to reproduce with Godot 4.4.1 on Debian 12.

func _ready():
	print(IP.resolve_hostname_addresses("fales-vm.local"))

Seems to resolve just fine to my VM IP.

Maybe it's a flatpak-specific issue?

[TheBlueOompaLoompa]

It can't be flatpak specific, I was able to replicate it on my system outside of flatpak on
Godot v4.4.1.stable - Arch Linux #1 SMP PREEMPT_DYNAMIC Fri, 09 May 2025 17:36:18 +0000 on Wayland - X11 display driver, Multi-window, 3 monitors - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2070 SUPER (nvidia; 570.144) - Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz (8 threads).
Maybe it's a kernel issue, and the reason why you don't have the same issue is your kernel is older? Or your avahi is older? Arch is rolling so there is a chance something was broken. It would probably make sense to try with different distro "newnesses".
When I have time, I'll download a bunch of live ISO's and test it.

[Faless]

Maybe it's a kernel issue, and the reason why you don't have the same issue is your kernel is older?

I actually have a somewhat new kernel (from backports) since I recently upgraded my machine and the kernel in stable is missing some drivers:

Linux 6.12.22+bpo-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.22-1~bpo12+1 (2025-04-25) x86_64 GNU/Linux