Your SSL tester at SSL Server Test (Powered by Qualys SSL Labs) has a typo in the tooltip reference notes. Note the superscripts below, they should actually point one value higher because someone added a new note it appears.
|IE 6 / XP No FS 1 No SNI 2||Protocol mismatch (not simulated)|
|(1) Certificate trust is not checked in handshake simulation, we only perform TLS handshake.|
|(2) Clients that do not support Forward Secrecy (FS) are excluded when determining support for it.|
|(3) No support for virtual SSL hosting (SNI). Connects to the default site if the server uses SNI.|
|(4) Only first connection attempt simulated. Browsers sometimes retry with a lower protocol version.|
|(R) Denotes a reference browser or client, with which we expect better effective security.|
|(All) We use defaults, but some platforms do not use their best protocols and features (e.g., Java 6 & 7, older IE).|