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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next 03/14] gtp: Call common functions to get
 tunnel routes and add dst_cache
Date: Tue, 19 Sep 2017 10:44:46 -0700 (PDT)
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From: Harald Welte <laforge@gnumonks.org>
Date: Tue, 19 Sep 2017 20:09:42 +0800

> So I guess you're asking us to document that rationale as form of a
> source code comment ?

Yes that would make ignoring the potential changing of the non-const
'saddr' argument at least be documented.