Latest Iceweasel 44 user agents:

User Agent Platform Device
Mozilla/5.0 (X11; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0 Iceweasel/44.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux i686; rv:44.0) Gecko/20100101 Firefox/44.0 Iceweasel/44.0.2,gzip(gfe) GNU/Linux Unknown
Mozilla/5.0 (X11; Linux i686; rv:44.0) Gecko/20100101 Firefox/44.0 Iceweasel/44.0.2 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux i686 on x86_64; rv:44.0) Gecko/20100101 Firefox/44.0 Iceweasel/44.0 GNU/Linux Unknown