Resolume Forum

When using multiple Ethernet adapters on macOS 15.6.1, Resolume Arena v7.23.1 detects both adapters under Preferences → DMX → Network Adapter. However, with more than one adapter enabled in macOS System Settings → Network, Arena fails to send or receive Artnet.

Steps to Reproduce:

macOS 15.6.1 with two Ethernet adapters connected to different networks.

With both adapters enabled in macOS, Artnet input/output in Arena does not work.

Disable one adapter in macOS → Artnet immediately works again in Arena.

Tested with third-party ArtNet monitoring tools while both adapters are enabled → Artnet traffic works fine at the OS level, so the issue is specific to Arena.

Expected Behavior:
Arena should send and receive Artnet over the selected adapter, even when multiple adapters are active (just like other ArtNet tools do).

Actual Behavior:
When multiple adapters are active, Arena does not send or receive any Artnet traffic.

System Info:

Resolume Arena: 7.23.1

macOS: 15.6.1

Hardware: Mac with multiple Ethernet adapters (USB/Thunderbolt)

Do you have multiple physical interfaces, or are you doing virtual IPs?

Is Resolume allowed to access local network in the OSX privacy settings, and are firewalls off?