This update is addressing some gameplay bugs that have been reported since the latest big client+server update. Also, there are some minor improvements to the RCON interface.The master servers will remain available; Battlelog will remain available.* Fixed AA missiles not doing damage to vehicles moving at very high speeds (This is the much wanted heatseaker fix)* Fixed TV Missile doing much more damage than it should (it is no longer a 1-hit kill)* Tweaked tank armor strength* MAV elevatoring fix, round 2; proning on the MAV will now disable it* RCON admin.say command can send to individual players* A few invalid map+gamemode combinations in maplist.txt could crash the server on startup; these combinations are now rejected instead* RCON vars.serverDescription was not returning anything in R20 if the string was not set; this has been changed to return “” instead* RCON player.onChat now reports the target player subsetThe server administrator manual can be found here: http://static.cdn.ea.com/dice/u/f/bfbc2/tmp/BF3_PC_Server_R21_933688_Docs_ServerAdministrator.zip [static.cdn.ea.com]