I have new KDE installation and I’m having network issues. Every couple of seconds I get ERR_NETWORK_CHANGED error when browsing or working with API’s. I’m using wired connection, other devices work fine.
Either you run
NetworkManager service, but make sure you do not run them both …
NetworkManager is running,
dhcpcd is not. I’ve read somewhere that there is a problem with network if you use Docker. I’ve disabled ip6 as this was one of the proposed solutions. I don’t get ERR_NETWORK_CHANGED anymore, but now every couple of seconds I get that notification that says Wired Connection X deactivated. Wired Connection Y activated. I can live with that for now.