Server not sending data to all connections from 1 ip

I am connecting with 3 tcp sessions from 1 computer to the test server.

Have a look at this log:

```
DEBUG Feb 16 19:26:06 ServerContext ServerContext(LobbyServer): Client connected
DEBUG Feb 16 19:26:06 LobbyConnection LobbyConnection initialized
TRACE Feb 16 19:26:06 LobbyConnection <<: {'version': '1.0', 'user_agent': 'downlords-faf-client', 'command': 'ask_session'}
TRACE Feb 16 19:26:06 LobbyConnection >>: {'command': 'session', 'session': 2427045952}
DEBUG Feb 16 19:26:07 ServerContext ServerContext(LobbyServer): Client connected
DEBUG Feb 16 19:26:07 LobbyConnection LobbyConnection initialized
TRACE Feb 16 19:26:07 LobbyConnection <<: {'version': '1.0', 'user_agent': 'downlords-faf-client', 'command': 'ask_session'}
TRACE Feb 16 19:26:07 LobbyConnection >>: {'command': 'session', 'session': 4036998942}
DEBUG Feb 16 19:26:08 ServerContext ServerContext(LobbyServer): Client connected
DEBUG Feb 16 19:26:08 LobbyConnection LobbyConnection initialized
TRACE Feb 16 19:26:08 LobbyConnection <<: {'version': '1.0', 'user_agent': 'downlords-faf-client', 'command': 'ask_session'}
TRACE Feb 16 19:26:08 LobbyConnection >>: {'command': 'session', 'session': 683814683}
TRACE Feb 16 19:26:08 LobbyConnection <<: {'login': 'Ze_PilOt', 'password': '2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae', 'session': 2427045952, 'unique_id': 'xxxx', 'local_ip': '10.184.244.245)', 'command': 'hello'}
DEBUG Feb 16 19:26:08 LobbyConnection Login from: 5, Ze_PilOt, 2427045952
ERROR Feb 16 19:26:08 LobbyConnection Failure updating NickServ password for Ze_PilOt
TRACE Feb 16 19:26:08 LobbyConnection >>: {'command': 'welcome', 'me': {'id': 5, 'login': 'Ze_PilOt', 'global_rating': (1889.21, 51.4297), 'ladder_rating': (1649.81, 49.5031), 'number_of_games': 688, 'avatar': {'url': 'http://content.faforever.com/faf/avatars/GW_Aeon.png', 'tooltip': 'Cleanse !'}, 'country': ''}, 'id': 5, 'login': 'Ze_PilOt'}
TRACE Feb 16 19:26:08 LobbyConnection >>: {'command': 'player_info', 'players': [{'id': 5, 'login': 'Ze_PilOt', 'global_rating': (1889.21, 51.4297), 'ladder_rating': (1649.81, 49.5031), 'number_of_games': 688, 'avatar': {'url': 'http://content.faforever.com/faf/avatars/GW_Aeon.png', 'tooltip': 'Cleanse !'}, 'country': ''}]}
TRACE Feb 16 19:26:08 LobbyConnection >>: {'command': 'social', 'autojoin': [], 'channels': [], 'friends': [6, 7, 9, 22, 45, 86, 124, 153, 440, 636, 5268, 5440, 23708, 25237, 27092, 29149, 29832, 30046, 32563], 'foes': [], 'power': 0}
TRACE Feb 16 19:26:08 LobbyConnection >>: {'command': 'game_info', 'games': []}
TRACE Feb 16 19:26:09 LobbyConnection <<: {'login': 'Ephez', 'password': '2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae', 'session': 4036998942, 'unique_id': 'xxxx, 'local_ip': '10.145.67.173)', 'command': 'hello'}
DEBUG Feb 16 19:26:09 LobbyConnection Login from: 6, Ephez, 4036998942
ERROR Feb 16 19:26:09 LobbyConnection Failure updating NickServ password for Ephez
TRACE Feb 16 19:26:09 LobbyConnection >>: {'command': 'welcome', 'me': {'id': 6, 'login': 'Ephez', 'global_rating': (1415.12, 95.5099), 'ladder_rating': (1500.0, 385.434), 'number_of_games': 247, 'country': ''}, 'id': 6, 'login': 'Ephez'}
TRACE Feb 16 19:26:09 LobbyConnection >>: {'command': 'player_info', 'players': [{'id': 5, 'login': 'Ze_PilOt', 'global_rating': (1889.21, 51.4297), 'ladder_rating': (1649.81, 49.5031), 'number_of_games': 688, 'avatar': {'url': 'http://content.faforever.com/faf/avatars/GW_Aeon.png', 'tooltip': 'Cleanse !'}, 'country': ''}, {'id': 6, 'login': 'Ephez', 'global_rating': (1415.12, 95.5099), 'ladder_rating': (1500.0, 385.434), 'number_of_games': 247, 'country': ''}]}
TRACE Feb 16 19:26:09 LobbyConnection >>: {'command': 'social', 'autojoin': [], 'channels': [], 'friends': [5, 7, 9, 20, 22, 25, 36, 84, 93, 329, 1354, 25237, 25249, 29149, 30046, 30418, 35030, 118730], 'foes': [], 'power': 0}
TRACE Feb 16 19:26:09 LobbyConnection >>: {'command': 'game_info', 'games': []}
TRACE Feb 16 19:26:10 LobbyConnection <<: {'login': 'Kekouse', 'password': '2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae', 'session': 683814683, 'unique_id': 'xxxx', 'local_ip': '10.186.120.71)', 'command': 'hello'}
DEBUG Feb 16 19:26:10 LobbyConnection Login from: 7, Kekouse, 683814683
ERROR Feb 16 19:26:10 LobbyConnection Failure updating NickServ password for Kekouse
TRACE Feb 16 19:26:10 LobbyConnection >>: {'command': 'welcome', 'me': {'id': 7, 'login': 'Kekouse', 'global_rating': (2050.28, 338.244), 'ladder_rating': (1763.22, 393.528), 'number_of_games': 68, 'country': ''}, 'id': 7, 'login': 'Kekouse'}
TRACE Feb 16 19:26:10 LobbyConnection >>: {'command': 'player_info', 'players': [{'id': 5, 'login': 'Ze_PilOt', 'global_rating': (1889.21, 51.4297), 'ladder_rating': (1649.81, 49.5031), 'number_of_games': 688, 'avatar': {'url': 'http://content.faforever.com/faf/avatars/GW_Aeon.png', 'tooltip': 'Cleanse !'}, 'country': ''}, {'id': 6, 'login': 'Ephez', 'global_rating': (1415.12, 95.5099), 'ladder_rating': (1500.0, 385.434), 'number_of_games': 247, 'country': ''}, {'id': 7, 'login': 'Kekouse', 'global_rating': (2050.28, 338.244), 'ladder_rating': (1763.22, 393.528), 'number_of_games': 68, 'country': ''}]}
TRACE Feb 16 19:26:10 LobbyConnection >>: {'command': 'social', 'autojoin': [], 'channels': [], 'friends': [5, 6, 9, 20, 25, 30, 36, 57, 93, 329, 457, 1094, 1354, 14153, 30046], 'foes': [], 'power': 0}
TRACE Feb 16 19:26:10 LobbyConnection >>: {'command': 'game_info', 'games': []}
TRACE Feb 16 19:26:48 LobbyConnection <<: {'command': 'pong'}
INFO Feb 16 19:26:49 MatchmakerQueue Searching for matches: ladder1v1
DEBUG Feb 16 19:26:49 Matchmaker Matching with stable marriage...
DEBUG Feb 16 19:26:49 MatchmakingPolicy Round 0 of stable marriage, currently 0 matches
DEBUG Feb 16 19:26:49 Matchmaker Matching randomly for remaining newbies...
INFO Feb 16 19:26:49 PopTimer Next ladder1v1 wave happening in 59s
TRACE Feb 16 19:27:33 LobbyConnection <<: {'command': 'pong'}
DEBUG Feb 16 19:27:39 LobbyConnection Lost lobby connection removing player 5
DEBUG Feb 16 19:27:39 LobbyConnection Lost lobby connection removing player 7
DEBUG Feb 16 19:27:39 LobbyConnection Lost lobby connection removing player 6

```

The last 3 log lines appear when I close my clients. So the connections are active all the time. Yet, the server only sends PINGs to one connection (and as such only one connection responds).
This is reproducible with other messages as well (e.g. player_info on new logins etc.)

_This might be an edge case. This behavior appears if no other users are on the server._