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Hello,
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in place upgrades from iOS 12 -> iOS 13 (release) seem to work well in general. But there is a bizarre issue depending on
<strong>remote</strong> endpoint ports. If you have, in my case, 4500/UDP configured as remote endpoint the tunnel does not send or receive traffic. Changing it to any other port works. Changing back to 4500/UDP breaks it again reproducibly. For others, documented
<a href="https://www.reddit.com/r/WireGuard/comments/d6in39/wg_broken_on_ios_13/">here</a> , it is 1500/UDP, in #WireGuard there has been a documented issue for 500/UDP not working.
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I have AnyConnect installed in parallel and checked, whether that's related. But removing and resetting Network settings did not fix port 4500 for me.
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As there is no port number dependent branching in the WireGuard-iOS code base, this is likely an iOS regression. Does any one of you have a working channel to Apple to report this?
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Thank you for an else excellent product. Let me know if I can be of any help.
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Best regards,
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Christian
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