Peter Bieringer

@NoroLexStudio : please restore original indents, then the resulting patch is much smaller - you can commit on-top of your branch and push again

Potentially one can take a look how I implemented this in `ipv6calc` for `mod_ipv6calc` used by Apache (there is a LRU cache inside): https://github.com/pbiering/ipv6calc/tree/master/mod_ipv6calc Also using the library of `ipv6calc`...

> @pbiering Is this PR merge OK for your existing project? We are alright with it if it does not break. I would assume it's still compatible, but I would...

> Can you please try compiling it with `IP2LOCATION_HIDDEN_INTERNALS` set in CFLAGS? Tried, causing issues, stops related to "typedef IP2Location" change during configure. ``` conftest.c: In function 'test': conftest.c:62:44: error:...

any update? I plan to release a new version of `ipv6calc` soon and can extend the `configure.ac` and other code if required to support the upcoming changes.

Tested "ipv6calc" with "IP2Location" variants incl. upcoming 8.7.0, found no incompatibility issue anymore

Related PR: https://github.com/chrislim2888/IP2Location-C-Library/pull/64

> I'd like to see this implemented as well. Offering the user the option of providing a backup/recovery email could reduce account lockout scenarios for this important service. Me too,...

check log of "radicale" on server side, potentially exception lines were found.

Note: if started by `systemd`, logging is piped into `journald`, means one can check the log via `journalctl -f -u radicale` Do you have a reverse proxy in front of...