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https://bugs.launchpad.net/bugs/1542444

Title:
  ib1: sendonly multicast join failed for
  ff12:601b:ffff:0000:0000:0000:0000:0016, status -22 (Multicast)

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Wily:
  Fix Committed
Status in linux source package in Xenial:
  Fix Released

Bug description:
  ---Problem Description---
  ib1: sendonly multicast join failed for ff12:601b:ffff:0000:0000:0000:0000:0016, status -22 (Multicast) 
   
  ---uname output---
  Linux ltcalpine-lp4 4.2.0-21-generic #25~14.04.1-Ubuntu SMP Thu Dec 3 13:55:42 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux

  ---Steps to Reproduce---
   1. run multicast tests and in the syslog you would find the below error messages

  [  362.785829] ib1: sendonly multicast join failed for ff12:601b:ffff:0000:0000:0000:0000:0016, status -22
  [  364.785811] ib1: sendonly multicast join failed for ff12:601b:ffff:0000:0000:0000:0000:0016, status -22
   
  == Comment: #2 - Carol L. Soto <clsoto@xxxxxxxxxx> - 2016-02-05 11:29:07 ==
  If I add this set of patches I do not see the messages:
  From c3acdc06a95ff20d920220ecb931186b0bb22c42 Mon Sep 17 00:00:00 2001
  From: Doug Ledford <dledford@xxxxxxxxxx>
  Date: Thu, 3 Sep 2015 17:05:58 -0400
  Subject: IB/ipoib: Clean up send-only multicast joins

  
  From d1178cbcdcf91900ccf10a177350d7945703c151 Mon Sep 17 00:00:00 2001
  From: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx>
  Date: Fri, 21 Aug 2015 17:34:13 -0600
  Subject: IB/ipoib: Suppress warning for send only join failures

  
  From bd99b2e05c4df2a428e5c9dd338289089d0e26df Mon Sep 17 00:00:00 2001
  From: Christoph Lameter <cl@xxxxxxxxx>
  Date: Thu, 24 Sep 2015 12:00:05 -0500
  Subject: IB/ipoib: Expire sendonly multicast joins

  
  From c3852ab0e606212de523c1fb1e15adbf9f431619 Mon Sep 17 00:00:00 2001
  From: Doug Ledford <dledford@xxxxxxxxxx>
  Date: Fri, 25 Sep 2015 14:35:01 -0400
  Subject: IB/ipoib: Make sendonly multicast joins create the mcast group

  
  From 2866196f294954ce9fa226825c8c1eaa64c7da8a Mon Sep 17 00:00:00 2001
  From: Doug Ledford <dledford@xxxxxxxxxx>
  Date: Fri, 25 Sep 2015 22:30:24 -0400
  Subject: IB/ipoib: increase the max mcast backlog queue

  
  From 0b5c9279e568d90903acedc2b9b832d8d78e8288 Mon Sep 17 00:00:00 2001
  From: Christoph Lameter <cl@xxxxxxxxx>
  Date: Sun, 11 Oct 2015 18:49:42 -0500
  Subject: IB/ipoib: For sendonly join free the multicast group on leave

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