#7972 BLOC 8.2.0 (: Collaboration problems in infra mode

[Zarro Boogs per Child]

#7972: Collaboration problems in infra mode
------------------------------+---------------------------------------------
 Reporter:  carrano           |         Owner:  Collabora           
     Type:  defect            |        Status:  new                 
 Priority:  blocker           |     Milestone:  8.2.0 (was Update.2)
Component:  presence-service  |       Version:  not specified       
 Keywords:                    |   Next_action:  diagnose            
 Verified:  0                 |     Blockedby:                      
 Blocking:                    |  
------------------------------+---------------------------------------------
 Joyride 2292 and 2301 (installed with olpc-update) present problems with
 collaboration in the following scenario.

 Two XOs connected to an access point (no school server, no jabber server).

 Most important symptoms:
  * You can't rely that one XO will see the other in the neighbor view.
 Sometimes it will, sometimes it won't. And sometimes, A will see B, but B
 will not see A.
  * Even if the A sees B, and also icons for activities shared by B, A can
 join that activity but no traffic will reach B, at least from a user point
 of view (did not sniff to see if the frames were sent).

 Notes:
  * It is possible for the XOs to ping each other with the eth0 address
  * If enabled to answer to broadcast pings, the XOs will even respond to
 each other pings to 224.0.0.1

 Interesting remarks that may or may not be related (it's important to get
 repeatability here):
  * in one of the XOs there were two circles for the same access point
  * it all seems to work fine after the removal of the networks.cfg and a
 reboot.

 I resisted the temptation to call this ticket "networks.cfg is causing us
 trouble", just because it could be a premature diagnoses.

-- 
Ticket URL: <http://dev.laptop.org/ticket/7972>
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