Ipv6 Routing (from hell)

[Nick Hilliard]

> We (SixXS) have thought about this, thus allowing people to have 
> multiple tunnels to the same, or, if the ISP is the same and are happy 
> with it, to different PoPs. Thus the ISP takes care of the global 
> routing, thus only their /32 etc. Internally one would have a few more 
> routes though. But that all depends on time for actually implementing it 
> and it is not something that a lot of people will use thus is not a high 
> priority.
> 
> In Michael's case though, we don't have a closeby tunnelbroker though, 
> thus that would be one of the first things to get going.
> As Bernhard mentioned, that is in effect just a colo'd box with a large 
> amount of IPv6 space routed to it.

Tunnels, tunnels, tunnels!  Argh!

Folks, please.  We seriously need to think beyond tunnels.  We're facing 
really serious problems in just a couple of years time and yet all we can 
think about is just building tunnels all over the place.

Tunnels are not good engineering practice.  Tunnels cause things to break 
in lots of interesting and difficult to diagnose ways.  Tunnels fail and 
don't get noticed.  Tunnels reduce your MTU.  Tunnels cause obesity and 
premature baldness.  Are we really serious that in the middle of 2008, that 
they are the best we can do?  Seriously?

Tunnels are premeditated fossils and pre-planned obsolescence.  They are 
toys and should be treated as such.  Please let's not treat them as 
anything else.  Let them die in a fire.  Let them drop off your router 
configuration.  Let them fade away into a fast and peaceful death.  But for 
goodness sake, don't plan tunnels into your network from the start.  They 
have no place in a well-designed network.

Michael, you really need to get your own ipv6 address range, get an ASN and 
talk BGP.  You can do cute and interesting things and have multiple access 
points from your network into multiple upstreams.  Yeah, you can fudge 
around with tunnels and build brokenness into your network from day 1, but 
trust me, you'll regret it.

Nick