#12780 NORM Future : XO-4 8787 may cease providing multicast packets to host

[Zarro Boogs per Child]

#12780: XO-4 8787 may cease providing multicast packets to host
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 Reporter:  Quozl   |                 Owner:                          
     Type:  defect  |                Status:  new                     
 Priority:  normal  |             Milestone:  Future Release          
Component:  kernel  |               Version:  Software Build 13.2.0-13
 Keywords:          |           Next_action:  reproduce               
 Verified:  0       |   Deployment_affected:                          
Blockedby:          |              Blocking:                          
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 During a heavy load test with #12779, it was found that a test unit
 stopped waking due to mDNS packets.

 The system was waking normally with keyboard control, and with ping
 packets, but not with mDNS packets.

 A side by side tcpdump showed this one laptop of the test bed was no
 longer receiving the packets.

 It was immediately fixed by disconnect and reconnect in Sugar Network
 Neighbourhood.

 Theory: the wireless card firmware had lost the multicast MAC address from
 the list of addresses to accept, or the command to set the address had
 been lost.

 Impact: very low probability event, seen once in 48 hours of testing of
 four laptops.  Would result in collaboration failures, yet continued
 internet access.

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Ticket URL: <http://dev.laptop.org/ticket/12780>
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