Hi, I have installed Freeradius 2.1.12 on Centos 6 and I use Thomas Glanzmann SMSOTP. Now I want to migrate that on Centos 8. I installed Freeradius 3.0.17 and same SMSOTP. When I login on vpn I first type username/password and after that smsotp pin. On new instalation I have issue with smsotp. My first login is OK and smsotp module creates and send smsotp pin. But after I type smsotp pin on vpn radius reject. smsotpd.pl scripts return wornings: Subroutine _call redefined at (eval 155) line 30. Subroutine SendSMSExtService::want_som redefined at (eval 155) line 73. Subroutine AUTOLOAD redefined at (eval 155) line 90. Subroutine SendSMSExtService::SendSMSExt redefined at (eval 155) line 88. Server session encountered read error 104: Connection reset by peer Server session encountered read error 104: Connection reset by peer p.s. In attach is last part of Freeradius debug. Thanks