Split Tunnel exclusions on macOS not using IPv6 address

[wavygecko]

Is it a bug?

• I know this is an issue with the app, and contacting Mullvad support is not relevant.

I have checked if others have reported this already

• I have checked the issue tracker to see if others have reported similar issues.

Current Behavior

On macOS, an app in the Split Tunnel list seems to still be restricted by what the Mullvad VPN "Enable IPv6" setting is set to. For example, if Firefox is in the Split Tunnel list and "Enable IPv6" is unchecked in Mullvad VPN, then only IPv4 addresses seem to be enabled for it.

Expected Behavior

I expect apps that are in the Split Tunnel list to use whatever the router assigns to the computer; i.e. if IPv6 is enabled on the router, the excluded app should have both an IPv4 and IPv6 address show up on https://mullvad.net/en/check.

Steps to Reproduce

1. Enable IPv6 on router
2. On macOS, add Firefox to Split Tunnel list
3. Disable IPv6 in Mullvad VPN
4. Go to https://mullvad.net/en/check and look at IP addresses; only IPv4 is listed

Notes:

• On Windows 10, doing the steps above seems to work as expected: both IPv4 and IPv6 addresses are listed (in split tunneled Firefox)

Failure Logs

No response

Operating system version

macOS 14.5

Mullvad VPN app version

2024.4

Additional Information

No response