Hi List, we use freeradius for authentication wireless users and use rlm_perl to integrate perl scripts which determine e.g. vlan info from our database and lookup the users password. I was having some issues with freeradius segfaulting. In debug mode (-X) everything worked, but normal mode (multithreaded) it segfaults. The segfault would be at a seemingly random place in the perl library. The solution was in the way rlm_perl calls perl_clone (for creating perl-threads). The perl docs say this must be done one after the other, not in parallel. By adding a mutex around the perl_clone calls, the problem went away. I have attached a patch which solved the problem for me. Perhaps this patch is of use to someone else. Suggestions and improvements are welcome? Eike Dehling Quarantainenet