netdev - Re: ICMPv6 too big Packet will makes the network unreachable

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Message-Id: <1444812287.2143451.409784161.5A6B4523@webmail.messagingengine.com>
Date:	Wed, 14 Oct 2015 10:44:47 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Li RongQing <roy.qing.li@...il.com>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: ICMPv6 too big Packet will makes the network unreachable



On Wed, Oct 14, 2015, at 08:44, Li RongQing wrote:
> On Tue, Oct 13, 2015 at 10:26 PM, Hannes Frederic Sowa
> <hannes@...essinduktion.org> wrote:
> >>    root@du1:~# ip route get 2001:1b70:82a8:18:650:65:0:2
> >>    2001:1b70:82a8:18:650:65:0:2 dev eth10.650  src
> >> 2001:1b70:82a8:18:650:65:0:2  metric 0
> >>        cache
> >>    root@du1:~#
> >
> > Which kernel version did you test this on?
> >
> > Thanks,
> > Hannes
> 
> 
> I think it is all version

I wonder very much because in tests I definitely hit the

static void __ip6_rt_update_pmtu(struct dst_entry *dst, const struct
sock *sk,
				 const struct ipv6hdr *iph, u32 mtu)
{
	struct rt6_info *rt6 = (struct rt6_info *)dst;

	if (rt6->rt6i_flags & RTF_LOCAL)
		return;

RTF_LOCAL check all the times. Which kernel version did you on
specifically?

Thanks,
Hannes
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