I wonder if this is a small violation of the EAP-TTLS RFC (5281). In RFC 5281 http://tools.ietf.org/html/rfc5281#section-9.2.2, it states: " .... Fragments other than the first MUST NOT have the L bit set. ... " while this behavior is configurable in eap.conf: " # include_length is a flag which is # by default set to yes If set to # yes, Total Length of the message is # included in EVERY packet we send. # If set to no, Total Length of the # message is included ONLY in the # First packet of a fragment series. # # include_length = yes " I understand that it is for EAP-TLS (which does not have this restriction) but I think EAP-TTLS is controlled by the same line. (?) I confess that I only actually SEE the behavior in the now ancient 1.1.6 version, and only took a quick look at the 2.1.0 config file and source code. I apologize if I missed something or this had been brought up before. -gong