Unusual network behaviour in VM of Zorin 18

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I was doing some stuff in a VM of Zorin 18 Core (default DE/Appearance) and decided to look at Network settings.

I noticed I had not checkmarked the IPv4 option, use this protocol for resources on the network, so I checkmarked that, went to disable IPv6 as the network icon (ethernet) had disappeared.

It made no difference, but reverting settings seemed to bring the icon back .

I can't help but wonder if the A.I. code used for the Networking element in the Linux kernel version 7.0 is causing issues.

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And how do You come to this?

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that ipv4 checkbox ("use this connection only for resources on its network") is a split-routing flag. flipping it makes NetworkManager rewrite the profile, so the tray icon often drops for a second then comes back when you undo it.

kernel 7.0 "ai code" is a red herring. nm just reapplied the connection.

if the icon stays gone: nmcli device and nmcli connection show --active. if eth0 still has an address the link is fine and the indicator is just confused.

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