group.of.nepali.translators team mailing list archive

[Stefan Bader <stefan.bader@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu Zesty)
       Status: In Progress => Won't Fix

-- 
You received this bug notification because you are a member of नेपाली
भाषा समायोजकहरुको समूह, which is subscribed to Xenial.
Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1738219

Title:
  the kernel is blackholing IPv6 packets to linkdown nexthops

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  Won't Fix
Status in linux source package in Artful:
  In Progress
Status in linux source package in Bionic:
  In Progress

Bug description:
  == SRU Justification ==
  When the 'ignore_routes_with_linkdown' sysctl is set, we should not
  consider linkdown nexthops during route lookup.

  While the code correctly verifies that the initially selected route
  ('match') has a carrier, it does not perform the same check in the
  subsequent multipath selection, resulting in a potential packet loss.

  In case the chosen route does not have a carrier and the sysctl is set,
  choose the initially selected route.

  This is a regression introduced by commit 35103d11173b in 4.3-rc1.  Commit
  bbfcd7763 resolves this regression and is mainline as of 4.15-rc1.

  == Fix ==
  commit bbfcd77631573ac4a9f57eb6169e04256a111bc1
  Author: Ido Schimmel <idosch@xxxxxxxxxxxx>
  Date:   Tue Nov 21 09:50:12 2017 +0200

      ipv6: Do not consider linkdown nexthops during multipath

  == Regression Potential ==
  This fix is specific to ipv6 and fixes a current regression.

  == Test Case ==
  A test kernel was built with this patch and tested by the original bug reporter.
  The bug reporter states the test kernel resolved the bug.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1738219/+subscriptions