netdev - Re: [PATCH net-next v5 00/11] ipv6: Only create RTF_CACHE route after encountering pmtu exception

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Message-ID: <55BA1144.9090203@ahsoftware.de>
Date:	Thu, 30 Jul 2015 13:57:56 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	Martin KaFai Lau <kafai@...com>, netdev <netdev@...r.kernel.org>
Cc:	David Miller <davem@...emloft.net>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Julian Anastasov <ja@....bg>,
	Steffen Klassert <steffen.klassert@...unet.com>,
	Kernel Team <Kernel-team@...com>
Subject: Re: [PATCH net-next v5 00/11] ipv6: Only create RTF_CACHE route after
 encountering pmtu exception

Am 29.07.2015 um 11:25 schrieb Alexander Holler:
> Am 23.05.2015 um 05:55 schrieb Martin KaFai Lau:
>
>> This series is to avoid creating a RTF_CACHE route whenever we are
>> consulting
>> the fib6 tree with a new destination.  Instead, only create RTF_CACHE
>> route
>> when we see a pmtu exception.
>
> That even helps on systems without an IPv6-connection to world because
> it avoids the IPv6 route add/delete pairs which happened before whenever
> an IPv6-connection was tried (e.g. by Happy Eyeballs algorithms).
>
> I think that's worse a laud. thanks.

Of course, I meant worth. Sorry, but the left part of my brain seems to 
be sometimes in a (maybe forced) power save mode. ;)

Also I wonder how the previous algorithm went into the kernel at all or 
why it wasn't fixed earlier. Anyway, it's great that someone took the 
time to fix that annoying behaviour (I've had on my radar since quiet 
some time).

Thanks again

> Alexander Holler

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