linux-kernel - Re: Routing loops & TTL tracking with tunnel devices

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Message-ID: <CAHmME9pNCqbcoqbOnx6p8poehAntyyy1jQhy=0_HjkJ8nvMQdw@mail.gmail.com>
Date:	Mon, 16 Nov 2015 21:55:19 +0100
From:	"Jason A. Donenfeld" <Jason@...c4.com>
To:	Sowmini Varadhan <sowmini.varadhan@...cle.com>
Cc:	Jiri Benc <jbenc@...hat.com>, therbert@...gle.com,
	David Miller <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Routing loops & TTL tracking with tunnel devices

Hi Sowmini,

Neat. Though, in my case, I'm not actually just prepending a header.
I'm doing some more substantial transformations of a packet. And this
needs to work with v4 too. So I'm not sure implementing a v6 spec will
help with things. I need to identify the right mechanism inside the
kernel to assist with this, like, say, a member in sk_buff.

Jason
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