netdev - Re: BUG REPORT: iproute2 seems to have bug with dsfield/tos in ip-rule and ip-route

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Message-ID: <099CD994-080F-43A8-9D50-A6947208908C@street-artists.org>
Date:   Wed, 13 Dec 2017 10:33:48 -0800
From:   Daniel Lakeland <dlakelan@...eet-artists.org>
To:     Stephen Hemminger <stephen@...workplumber.org>
CC:     netdev@...r.kernel.org
Subject: Re: BUG REPORT: iproute2 seems to have bug with dsfield/tos in ip-rule and ip-route

On December 13, 2017 10:12:59 AM PST, Stephen Hemminger <stephen@...workplumber.org> wrote:
>On Wed, 13 Dec 2017 09:40:08 -0800
>Daniel Lakeland <dlakelan@...eet-artists.org> wrote:
>
>> This same problem as detailed here
>> 
>> http://lists.openwall.net/netdev/2010/03/26/36
>
>This mail reports an issue from 7 years ago, much nas
>changed since then.
>

I figure it's still biting me because no one reported it. This is with modern Debian testing system.

>
>The kernel is complaining that ip rule is not valid, (ie not iproute2
>issue).

Note that like some of those other people I was able to get ip rule to accept tos values with just low order bits set... On my phone now so can't test an example but it was a tos like 0x0c or something.

I'm really not familiar with internals or who's in charge of what I just wanted to be sure this issue hit some kernel netdev people's radar instead of dropping on the floor!!

>Not sure exactly why or where in fib_rules.c this is happening.

-- 
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