Mailinglist Archive: opensuse (1599 mails)

[James Knott <james.knott@xxxxxxxxxx>]

Per Jessen wrote:
> James Knott wrote:
>
>   
> > Per Jessen wrote:
> >     
> > > Adam Tauno Williams wrote:
> > >   
> > > ]
> > >   
> > >       
> > > > * is faster for local transfers (gone are MTU/MRU & fragmentation
> > > > issues)
> > > >     
> > > >         
> > > How does IPv6 do that - isn't MTU dependent on the ethernet packet
> > > size and router support for the same?
> > >
> > >   
> > >       
> > When was the last time you saw anything that didn't support 1500 byte
> > MTU? 
> >     
>
> This morning :-) 
> I have an IPv4 setup which uses IPIP tunnels on the back of LVS, and
> those tunnels reduce my MTU to 1440.  
>
> Still, how does IPv6 avoid MTU/MRU & fragmentation issues?  PMTU is
> surely still required.
>
>   

IPv6 uses path MTU discovery to determine the maximum size.

http://en.wikipedia.org/wiki/Path_mtu_discovery
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