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[Bug 1552788] [NEW] network lost after large number of reboots

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From: Launchpad Bug Tracker <1552788@xxxxxxxxxxxxxxxxxx>
Date: Thu, 03 Mar 2016 16:33:23 -0000
Reply-to: Bug 1552788 <1552788@xxxxxxxxxxxxxxxxxx>
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---Problem Description---
network lost after large number of reboots (>500)
 
Contact Information = pschmidt@xxxxxxxxxx 
 
---uname output---
Linux s8330025 4.4.0-2-generic #16-Ubuntu SMP Thu Jan 28 15:44:18 UTC 2016 s390x s390x s390x GNU/Linux
 
Machine Type = s390 z/VM Guest 
 
---Steps to Reproduce---
 reboot z/VM guest several times >500. After a large number of reboots the network interfaces doesn't come up any more. The z/VM guest boots fine, unless the missing network. Impossible to bring up network again manually.

==

Further debug shows that it is the "ip link set enccw0.0.f5f0 up" that
is failing with "RTNETLINK answers: Operation not permitted".  Looking
for further debug assistance in determining why the CAP_NET_ADMIN check
for the root user running ip might be failing.

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Skipper Bug Screeners (skipper-screen-team)
         Status: New


** Tags: architecture-s39064 bot-comment bugnameltc-136706 severity-high targetmilestone-inin1604
-- 
network lost after large number of reboots
https://bugs.launchpad.net/bugs/1552788
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