[Bug 1678] conntrack -D exits with nonzero status if it didn’t find any flows to delete

[bugzilla-daemon at netfilter.org]

https://bugzilla.netfilter.org/show_bug.cgi?id=1678

Phil Sutter <phil at nwl.cc> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |phil at nwl.cc
         Resolution|---                         |WONTFIX

--- Comment #1 from Phil Sutter <phil at nwl.cc> ---
I guess it's a matter of defining what a "successful operation" is in this
regard and for conntrack, it seems to involve finding at least a single flow to
delete.

If we change this, it may break others' scripts.

If you have to distinguish between errors and "nothing to do", you could grep
for the '0 flow entries have been deleted.' message - it is not printed in
error case. Or just check if there's output on stderr.

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