Wireguard on MacOS Catalina randomly deletes config

Wireguard on MacOS Catalina randomly deletes config

[Chris Gaffney]

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Hi,

Version: MacOS App Store 0.0.20190610 (13)
Go Version: 0.0.20190517

I’ve been using Wireguard on MacOS for the last couple of months without issue. Two days ago I upgraded to MacOS 10.15 Catalina and everything had been working fine up until this morning when Wireguard randomly deleted its configuration.

I had connected to my Wireguard server and had an ssh session going over the tunnel when my connection stopped working. Checking Wireguard showed that the tunnel I had been using was no longer listed in the tunnel manager. I tried restating Wireguard but the configuration didn’t come back and had to be recreated.

Logs: https://gist.github.com/gaffneyc/624ea733e1cfa42adabfa2fcbecaf1c8

- Chris Gaffney
@gaffneyc


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Re: Wireguard on MacOS Catalina randomly deletes config

[Jason A. Donenfeld]

This appears to be a bug in macOS 10.15. I've informed Apple, and
they're looking into it.

The log file you gave has the line in it:

> 2019-10-10 07:25:16.071772: [APP] Tunnel 'Office' connection status changed to 'invalid'

If you look at your system logs for that timestamp, that will
correspond with a line emitted from com.apple.networkextension like:

> Removing configuration Office because the corresponding VPN application has been removed.

Reverse engineering
/System/Library/Frameworks/NetworkExtension.framework/Versions/A/NetworkExtension
indicates that this comes from the call chain:

-[NEConfigurationManager
handleApplicationsRemoved:completionQueue:withCompletionHandler:]
-->
__90__NEConfigurationManager_handleApplicationsRemoved_completionQueue_withCompletionHandler___block_invoke
-->
__90__NEConfigurationManager_handleApplicationsRemoved_completionQueue_withCompletionHandler___block_invoke_2

So I assume that some kind of inclusion check is failing when it
shouldn't, or some kind of app store notification is being triggered
when it shouldn't.

Jason
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