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Message #170142
[Bug 1552788] strace of ip link set enccw0.0.f5f0 up
Default Comment by Bridge
** Attachment added: "strace of ip link set enccw0.0.f5f0 up"
https://bugs.launchpad.net/bugs/1552788/+attachment/4619462/+files/ip.up.strace.5030
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https://bugs.launchpad.net/bugs/1552788
Title:
network lost after large number of reboots
Status in linux package in Ubuntu:
Incomplete
Bug description:
---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.
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