netdev - DSCP of ICMPv6 Echo Reply not copied from Echo Request

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Message-ID: <trinity-4fd0752d-8ed9-432f-aa23-28055f886c4a-1389191682248@3capp-gmx-bs32>
Date:	Wed, 8 Jan 2014 15:34:42 +0100 (CET)
From:	"Simon Schneider" <simon-schneider@....net>
To:	netdev@...r.kernel.org
Subject: DSCP of ICMPv6 Echo Reply not copied from Echo Request

Hi,
with kernel version 2.6.33.32, I noticed for ping6 that the DSCP value of an Echo Request is not used for the corresponding Echo Reply.

With ICMPv4, this is the case and I think it makes sense.

This is not mandated by ICMP RFCs, but there are good reasons to use the same DSCP in both directions.

Is there a specific reason for this difference between v4 and v6?

Or was it even fixed in some newer kernel version?

best regards, Simon
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