netdev - Re: ICMPv6: treat dest unreachable codes 5 and 6 as EACCES, not EPROTO

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Message-Id: <20130903.221224.1469516113963270002.davem@davemloft.net>
Date:	Tue, 03 Sep 2013 22:12:24 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	jbohac@...e.cz
Cc:	yoshfuji@...ux-ipv6.org, netdev@...r.kernel.org
Subject: Re: ICMPv6: treat dest unreachable codes 5 and 6 as EACCES, not
 EPROTO

From: Jiri Bohac <jbohac@...e.cz>
Date: Fri, 30 Aug 2013 11:18:45 +0200

> RFC 4443 has defined two additional codes for ICMPv6 type 1 (destination
> unreachable) messages:
>         5 - Source address failed ingress/egress policy
> 	6 - Reject route to destination
> 
> Now they are treated as protocol error and icmpv6_err_convert() converts them
> to EPROTO.
> 
> RFC 4443 says:
> 	"Codes 5 and 6 are more informative subsets of code 1."
> 
> Treat codes 5 and 6 as code 1 (EACCES)
> 
> Btw, connect() returning -EPROTO confuses firefox, so that fallback to
> other/IPv4 addresses does not work:
> https://bugzilla.mozilla.org/show_bug.cgi?id=910773
> 
> Signed-off-by: Jiri Bohac <jbohac@...e.cz>

Applied and queued up for -stable, thanks.
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