The bug was introduced only last year in macOS 26:

https://github.com/apple-oss-distributions/xnu/blame/f6217f8...

plorkyeran 11 hours ago | parent | next [-]

> Apple Community #250867747: macOS Catalina — "New TCP connections can not establish." New connections enter SYN_SENT then immediately close. Existing connections unaffected. Only a reboot fixes it.

This is a weird thing to cite if it's a macOS 26 bug. I quite regularly go over 50 days of uptime without issues so it makes sense for it to be a new bug, and maybe they had different bugs in the past with similar symptoms.

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Aloisius 11 hours ago | parent | prev [-]

Interesting. The article mentions complaints on the forums running Catalina, so that must be something else.

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js2 11 hours ago | parent | next [-]

As someone who also operates fleets of Macs, for years now, there is no possible way this bug predates macOS 26. If the bug description is correct, it must be a new one.

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groby_b 11 hours ago | parent | prev [-]

The article is written using AI, so unless you verified the complaints, the safe default assumption is that they don't exist.

	▲	Aloisius 10 hours ago \| parent [-]
		It definitely exists, but it could be a completely unrelated issue. https://discussions.apple.com/thread/250867747