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    ipv6 connectivity lost after some minutes (linux)

    by bf46 ·



    I’m running linux (raspbian/rasberry pi os, more precisely) on my RPI4. It has a static ipv4 and also ipv6. I have opened 3 ports to this device (http, https, vpn) in my router for ipv6. When I boot my RPI4, it first is accessible (ping, vpn, http(s)) via its ipv6, both locally and remotely. Sadly, after some minutes (I have not been able to figure out the exact duration or even if it is always the same), this ipv6 connectivity gets lost. The device then does not react to any ipv6 ping whatsoever. “ifconfig” also shows, that the ipv6 which it previously owned, is no longer present.

    I already tried finding a solution on my own, but so far no luck. As a note from that search: The temporary address should be disabled for the relevant network (“net.ipv6.conf.eth0.use_tempaddr = 0”)

    Any ideas as to why this is happening?

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