How and where does NetworkManager track prefixes from Router Announcements?
I recently changed my router advertisement to remove a prefix which previously had a 24
hour expiration on it. I thought I would be able to manually remove the removed prefix
before expiration from the appropriate connections via `ip` commands, but the address and
route come back with every router advertisement I receive on that interface (even though
the RA no longer includes the prefix).
The address entry show the "count down" of `valid_lft` appropriately:
2: eno1 inet6 xxxx:6081:1a02:1102:b534:7b79:6baa:d27c/64 scope global deprecated
tentative dynamic noprefixroute
valid_lft 43371sec preferred_lft 0sec
I can watch the address from the removed prefix get added via `ip monitor` when a RA
comes in (seen with `radvdump`).
The router advertisement does not contain the prefix (seen with `radvdump`).
NetworkManager manages this connection, but I cannot figure out where/what is tracking the
stale (but not expired yet) prefix. I find no references to the prefix in `nmcli
connection` outputs (except the "capitalized" runtime keys) and didn't see
anything in /var/lib/NetworkManager/ or /run/NetworkManager/.
Thanks,
Adam
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