On Apr 12, 2020, at 11:52 AM, Aurélio de Souza Ribeiro Neto <netolistas@mpc.com.br> wrote:

I´m using Freeradius 3.0.20 and MySQL.

Sometimes, I think in NAS fault or packet loss, I have same IP for 2 different users.

Any hint?

As always, read the debug output. If you're using SQL IP pools, then the server will allocate an IP only when: a) the lease has expired without any updates from the NAS or b) when the NAS tells FreeRADIUS that the users session is closed So... blame the NAS. Alan DeKok.