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systemd-networkd stops adding temporary IPs after a few days with IPv6PrivacyExtensions=yes #13218
systemd version the issue has been seen with
Expected behaviour you didn't see
Unexpected behaviour you saw
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every few minutes I have entries like the following one:
24 hours later no more related entries.
Output of ip a at that time:
All temporary IPv6 addresses are now deprecated. After their lifetime has expired, the old addresses get removed
When the last IPv6 address is to be removed, I find the following log entries
and the last deprecated address gets active again and the procedure starts again with adding new addresses for a few days...
When my router or the ISP disconnects my WAN connection and receives a new prefix, this also resulted in a new temporary IPv6 address until the renewal stalls again.