Alan,
When it happens I have this messages in freeradius LOGs:
WARNING: (131915) WARNING: Module rlm_sql became unblocked Error: Received conflicting packet from client ce-popfd-rb port 49756 - ID: 101 due to unfinished request in module sql. Giving up on old request
What I need to adjust do solve this issue?
Make the MySQL server respond quickly. The "rlm_sql became unblocked" message comes out because the SQL server didn't respond to one query for *many* seconds.
No amount of poking FreeRADIUS will fix this issue. It's either a slow database, or a network issue which causes connections to be blocked.
Alan DeKok. You´re right! Was a network problem.
I want to thank and share how I solved my "problem" . After check all my hardware and sure that I don´t have any problem, I found a problem in my Ubuntu TCP/IP tuning (database server)! I did the steps found in https://dom.as/2006/09/12/mysql-tcp-network-tuning/ and haven´t no more messags from module_rlm_sql! Thank you again Aurélio
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