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Re: [lwip-devel] ipv6 processing - ICMPv6 Echo


From: Enrico Lehmann
Subject: Re: [lwip-devel] ipv6 processing - ICMPv6 Echo
Date: Sat, 28 Apr 2012 23:18:33 +0200

-------- Original-Nachricht --------
> Datum: Fri, 27 Apr 2012 10:39:29 -0600 (MDT)
> Von: "Ivan Delamer" <address@hidden>
> An: address@hidden, "Enrico Lehmann" <address@hidden>
> Betreff: Re: ipv6 processing - ICMPv6 Echo

> > The third question is about the Echo Request/Response processing in
> > icmp6_input(). If an Echo Request is detected, the IPv6 source address
> of
> > the Echo Response message is determined by calling
> > ip6_select_source_address(). Shouldn't this IPv6 source address not the
> > same as the IPv6 destination address of the Echo Request message? A
> quote
> > from RFC 4443 [chapter 4.2]:
> >
> > "The source address of an Echo Reply sent in response to a unicast Echo
> > Request message MUST be the same as the destination address of that Echo
> > Request message."
> >
> > As I understand this would omit the ip6_select_source_address() and
> > simplifies it to just use the ip6_current_dest_addr() address (previous
> > make sure this is not a multicast address).
> >
> 
> This is a good suggestion and I will revise the code, hopefully push a fix
> today.

I am glad if I could give a clue :-).

> 
> Cheers
> Ivan
> 

Ciao,
Enrico
> 
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