Shure Wireless Workbench device discovery using link-local addressing with IGMP snooping enabled on network.
I’m running into an issue where Shure Wireless Workbench (WWB) on macOS Sonoma (latest version) cannot discover Shure devices when the network is using link-local (169.254.x.x) addressing.
The exact same setup works correctly on Windows, even when both computers and Shure devices are using link-local addresses.
Setup:
- Macs running macOS Sonoma
- Shure Axient receivers and Dante audio devices
- Netgear M4250 switches configured with the “Audio Dante” profile
- No DHCP or static IPs , everything runs Auto-IP (169.254.x.x)
Observed behavior:
- On macOS, Wireless Workbench shows no discovered devices.
- On Windows, discovery works immediately on the same network.
Interesting finding:
- If I run Windows 11 in a virtual machine on the same Mac and bridge the VM directly to the Ethernet adapter:
- Launching WWB inside the VM immediately discovers all Shure devices.
- At that same moment, WWB running natively on macOS also discovers them.
- I can then close the VM, and the macOS instance continues working normally.
In one test, I left the Mac running for three days, and Wireless Workbench continued seeing all Shure devices for that entire time.
This suggests macOS may handle multicast group joins differently over link-local networks compared to Windows.
Has anyone else experienced this issue or found a reliable workaround for link-local multicast discovery on macOS?