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And Mullvad very clearly indicated it's connected to Apple/macOS:

> bug in the macOS firewall, packet filter (PF)

It's not macOS firewall, but Apple's implementation of OpenBSD's pf used in Apple's macOS. Mullvad is clearly pointing at a bug in OpenBSD's "packet filter", mentioning that it's used in macOS.

Mullvad's article lacks proper wording and shits on the wrong target.

There isn't any mention of OpenBSD in the article. It says:

> a bug in the macOS firewall, packet filter (PF)

> We believe the firewall bugs must be fixed by Apple.

I don't see how you can interpret that as shitting on OpenBSD.

Or maybe they're not shitting on anyone in particular and just trying to warn their MacOS users about a security issue?

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