ipv6 question

Bill Davidsen davidsen at tmr.com
Tue Jun 2 21:23:16 UTC 2009


Wolfgang S. Rupprecht wrote:
> Bill Davidsen <davidsen at tmr.com> writes:
>> I have a related question. If I set up a tunnel to forward IPv6 thru
>> IPv4, the existing setups seem to use part of my IPv4 address as part
>> of the IPv6 address. Fair enough, but is there some way to get a
>> permanent IPv6 allocation, such that if my primary ISP goes out for
>> any reason, I can use my secondary instead? I'd like to set up some
>> servers on VMs in my DMZ[1] for testing.
> 
> In order to avoid the mess crated in IPv4 with lots of hard to route
> direct assignments, IPv6 addresses are not handed out to end users.
> They are only handed out to ISP's (in hunks of /32 if I recall
> correctly), who in tun hand out /48's to end users.  That keeps the
> routing table nice and small, but also means that if you are an end
> user, you will have to play short-TTL dns games if you want a fail-over
> for a server.
> 
My ISP owns my static IPs now, more or less, so I don't need to control them as 
much as be able to use them from multiple points. Thanks for the info.

-- 
Bill Davidsen <davidsen at tmr.com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot




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