Hi,
I found a strange condition in the function sss_ncache_check_str().
This condition causes the cache is NOT checked and the result of
checking is automatically EEXIST.
I dind't find call of sss_ncache_check_str() with ttl = -1, except in tests.
Note: We use value 0 for permanent cache, no -1.
Regards
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Petr^4 Čech