From The Mana World
Template:Packet define SMSG UPDATE HOST
Template:Packet sent src/login/login.cpp:3649
Template:Packet parsed src/net/tmwa/loginhandler.cpp:103
{{packet_description This packet gives the client the location of the update server URL, such as http://updates.themanaworld.org
It is only sent if an update host is specified for the server (there is one in the default configuration) and the client identifies as accepting an update host (which all supported clients do). }}