Comment 7 for bug 1809497

Reviewed: https://review.opendev.org/719751
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=e04ed368ad975b7a39262945b8900c13b7e13807
Submitter: Zuul
Branch: stable/rocky

commit e04ed368ad975b7a39262945b8900c13b7e13807
Author: Slawek Kaplonski <email address hidden>
Date: Mon Jan 14 22:29:25 2019 +0100

    Support iproute2 4.15 in l3_tc_lib

    In version 4.15 of iproute2 there was added support
    for chain index in tc_filter [1].
    Such version is available e.g. in Ubuntu 18.04 and it
    has to be supported in l3_tc_lib regex to match
    properly output of "tc filter" command.

    [1] https://lwn.net/Articles/745643/

    Closes-bug: #1809497
    Change-Id: Id4066b5cff933ccd0dd3c751bf67b5d58af662d1
    (cherry picked from commit e788d294584add2407f601a46f90b08082cccc5f)