Hi! As stated in the Readme does freeradius 3 calculate the Acct-Unique-Session-ID a little different. I tried to adapt the policy, but I am failing since the md5 calculated by fr2 is 16 chars while fr3 uses 32 chars. Is it possible to get the old 16 char value via unlang? Comparison: Freeradius 3: Fri Mar 15 12:55:40 2019 : Debug: (53) Received Accounting-Request Id 188 from 127.0.0.1:48589 to 127.0.0.1:1823 length 164 Fri Mar 15 12:55:40 2019 : Debug: (53)   Acct-Session-Id = "000D532D" Fri Mar 15 12:55:40 2019 : Debug: (53)   Framed-IP-Address = 10.1.1.253 Fri Mar 15 12:55:40 2019 : Debug: (53)   User-Name = "testuser" Fri Mar 15 12:55:40 2019 : Debug: (53)   NAS-Port = 918 Fri Mar 15 12:55:40 2019 : Debug: (53)   NAS-IP-Address = 1.2.3.4 Fri Mar 15 12:55:40 2019 : Debug: (53)   NAS-Identifier = "cisco_vpn" Fri Mar 15 12:55:40 2019 : Debug: (53) # Executing section preacct from file /radius/conf/sites-enabled/conf Fri Mar 15 12:55:40 2019 : Debug: (53)   preacct { Fri Mar 15 12:55:40 2019 : Debug: (53)     policy acct_unique { Fri Mar 15 12:55:40 2019 : Debug: (53)       update request { Fri Mar 15 12:55:40 2019 : Debug: (53)         EXPAND %{md5:%{User-Name},%{Acct-Session-ID},%{%{NAS-IPv6-Address}:-%{NAS-IP-Address}},%{Framed-IP-Address},%{NAS-Port}} Fri Mar 15 12:55:40 2019 : Debug: (53)            --> 4ef5bf8c3ec7fc4a503baa791573fc15 Fri Mar 15 12:55:40 2019 : Debug: (53) &Acct-Unique-Session-Id := 4ef5bf8c3ec7fc4a503baa791573fc15 Fri Mar 15 12:55:40 2019 : Debug: (53)       } # update request = noop Fri Mar 15 12:55:40 2019 : Debug: (53)     } # policy acct_unique = noop Freeradius 2: Fri Mar 15 12:58:27 2019 : Info: # Executing section preacct from file /radius3/conf/sites-enabled/conf Fri Mar 15 12:58:27 2019 : Info: +group preacct { Fri Mar 15 12:58:27 2019 : Info: [acct_unique] Hashing 'NAS-Port = 918,Framed-IP-Address = 10.1.1.253,NAS-IP-Address = 1.2.3.4,Acct-Session-Id = "000D532D",User-Name = "testuser"' Fri Mar 15 12:58:27 2019 : Info: [acct_unique] Acct-Unique-Session-ID = "b721c58aae1ea593".