error restoring Unix socket ... path too long to be stored properly

I am getting this error during extraction of an archive of an encrypted
file system (each file and its filename are encrypted separately,
that's why the long jibberish filenames). The source and destination are
the same f2fs file system on Debian stable 10.9.  The original socket
name works, so why can't dar extract that same name?  Is this a problem
specific to sockets?  Is it a problem with dar's understanding of the
f2fs filesystem?  There are many other much longer pathnames in
this backup that were extracted without issue, but this was the only
socket.

Also note the second error - after dar shortens the socket name to 1y,
it ignores that when trying to set the access/mod time and instead uses
the original longer name.

The extraction is via dar_static_2.16.4_x86_64_GNU_Linux.

error restoring Unix socket
/test/extracted/tstuser/.cipher/pIfxiZMpaxuzJh30lp04iA/_gpq3AzCwhKLUb23hVclGg/mnHz8gVk8IYxO1x9oqlDDQ/1yPGRcfpLKIgzWjS526c9g,
path too long to be stored properly, socket will be created as
/test/extracted/tstuser/.cipher/pIfxiZMpaxuzJh30lp04iA/_gpq3AzCwhKLUb23hVclGg/mnHz8gVk8IYxO1x9oqlDDQ/1y
instead, do you confirm? [return = YES | Esc = NO] Continuing... Error
while restoring
/test/extracted/tstuser/.cipher/pIfxiZMpaxuzJh30lp04iA/_gpq3AzCwhKLUb23hVclGg/mnHz8gVk8IYxO1x9oqlDDQ/1yPGRcfpLKIgzWjS526c9g
: Cannot set last access and last modification time: No such file or
directory

Everything but that socket cheks out:
# diff -qr --no-dereference .cipher /home/tstuser/.cipher
Only in
.cipher/pIfxiZMpaxuzJh30lp04iA/_gpq3AzCwhKLUb23hVclGg/mnHz8gVk8IYxO1x9oqlDDQ:
1y Only in
/home/tstuser/.cipher/pIfxiZMpaxuzJh30lp04iA/_gpq3AzCwhKLUb23hVclGg/mnHz8gVk8IYxO1x9oqlDDQ:
1yPGRcfpLKIgzWjS526c9g