RES: IPv6 tranisition issues

 Hi,


>Why?

>Because IPv6 does not have really many significant advantages, at least 
>when you don't consider it in case-by-case basis.

  IPv6 can be seen like a IPv4 optimization and a more correct protocol of the security 
point of view. It is the our chance to make the right things :-).


>Why?

>Because folks want to have features provided by IPv6 in IPv4; think about 
>NAT-traversal, IPSEC in UDP encapsulation, DHCP, zeroconf efforts, Mobile 
>IPv4 route-optimization, etc.

 Today, they really dont need this features. But it is imminent the address crisis
(Here in Brazil and Americas, we have many address yet). It is necessary to start to see alternatives. The new protocol should solve this problem and after it can solve other, improve some aspects, do thing better...


>Why?

>Because they don't see IPv6 majorly kicking off any time in the immediate
>future, so that they'd be better off switching IP versions, rather than
>patch IPv4 (or rather, require patches from their vendors).


  It is more easy to vendors patch the current protocol. In the new networks, they already are talking in IPv6. 3GPP is a example. We dont want that all IPv4 infrastructure be chanched to new Ipv6 infrastructure. But we want that whenever that possible IPv6 be prefered to Ipv4. Why? Bacause it is better than Ipv4! Transition solutions can be used to communication with IPv4 networks. In the new backbones (Internet "independent") IPv6 can be used for several motives: more secure and more optimized. 

IPv6 is a natural evolution to IPv4. This is fact. Folks should prepair themselves to make this upgrade :-).
Best Regards,

   Marcelo Lima