I solved this by adding the parameter DoUplink=True for the UdpServerUplink, for example:
Code: Select all
[Engine.GameEngine]
ServerActors=IpServer.UdpServerUplink MasterServerAddress=master.333networks.com MasterServerPort=27900 DoUplink=True
Server details:
Spoiler
OS: Ubuntu 14.04.3 LTS
UT: server version 451
UT Framework: abfackelns Server Utilities (ASU) v0.6
UT mods: nexgen112, BarbiesWorld, MapvoteLA13, ServerAdds v1.04, SBMutatorFastWarShell-Rev2
UT: server version 451
UT Framework: abfackelns Server Utilities (ASU) v0.6
UT mods: nexgen112, BarbiesWorld, MapvoteLA13, ServerAdds v1.04, SBMutatorFastWarShell-Rev2