When i try to authenticate through EAP/PEAP/MSCHAPV2 i got the following error Mon Dec 28 20:25:20 2015 : Debug: rlm_ldap (ldap): Reserved connection (4) Mon Dec 28 20:25:20 2015 : ERROR: (1) ldap : (uid=%u) Mon Dec 28 20:25:20 2015 : ERROR: (1) ldap : ^ Invalid variable expansion Mon Dec 28 20:25:20 2015 : ERROR: (1) ldap : Unable to create filter Mon Dec 28 20:25:20 2015 : Debug: rlm_ldap (ldap): Released connection (4) Does anybody knows where its come from? I have had to use my own built that may explain many but i don't know where to seek for solutions Thanks for your help!!!! FYI: I'm using eapol_test with the following configuration file network={ key_mgmt=NONE eap=MSCHAPV2 identity="XXXXX" password="******" } He is my ldap module configuration file ldap { server = "127.0.0.1" identity = "cn=Manager, dc=pipoiohxui" password = "********" basedn = "ou=Users,dc=pipoiohxui" filter = "(uid=%{%{Stripped-User-Name}:-%{User-Name}})" base_filter = "(objectclass=radiusprofile)" ldap_connections_number = 5 timeout = 4 timelimit = 3 net_timeout = 1 tls { start_tls = no } dictionary_mapping = ${confdir}/ldap.attrmap edir_account_policy_check = no } Here is the start of radiusd Mon Dec 28 20:19:01 2015 : Info: radiusd: FreeRADIUS Version 3.0.3, for host x86_64-redhat-linux-gnu, built on Dec 28 2015 at 20:12:25^[[0m Mon Dec 28 20:19:01 2015 : Debug: Server was built with: Mon Dec 28 20:19:01 2015 : Debug: accounting Mon Dec 28 20:19:01 2015 : Debug: authentication Mon Dec 28 20:19:01 2015 : Debug: ascend binary attributes Mon Dec 28 20:19:01 2015 : Debug: coa Mon Dec 28 20:19:01 2015 : Debug: control-socket Mon Dec 28 20:19:01 2015 : Debug: detail Mon Dec 28 20:19:01 2015 : Debug: dhcp Mon Dec 28 20:19:01 2015 : Debug: dynamic clients Mon Dec 28 20:19:01 2015 : Debug: proxy Mon Dec 28 20:19:01 2015 : Debug: regex-pcre Mon Dec 28 20:19:01 2015 : Debug: session-management Mon Dec 28 20:19:01 2015 : Debug: stats Mon Dec 28 20:19:01 2015 : Debug: tcp Mon Dec 28 20:19:01 2015 : Debug: threads Mon Dec 28 20:19:01 2015 : Debug: tls Mon Dec 28 20:19:01 2015 : Debug: unlang Mon Dec 28 20:19:01 2015 : Debug: vmps Mon Dec 28 20:19:01 2015 : Debug: Server core libs: Mon Dec 28 20:19:01 2015 : Debug: talloc : 2.0.* Mon Dec 28 20:19:01 2015 : Debug: ssl : OpenSSL 1.0.1g-fips 23 Dec 2015 0x01000107f (1.0.1g-15) Mon Dec 28 20:19:01 2015 : Debug: Library magic number: Mon Dec 28 20:19:01 2015 : Debug: 0xf403000300000000 Mon Dec 28 20:19:01 2015 : Debug: Endianess: Mon Dec 28 20:19:01 2015 : Debug: little This is my own build for security purposes linked to openSSL library.