Differences between version 3 and predecessor to the previous major change of AAAAvsA6.
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| Newer page: | version 3 | Last edited on Wednesday, November 24, 2004 4:56:22 pm | by MikeBeattie | Revert |
| Older page: | version 1 | Last edited on Wednesday, July 30, 2003 9:35:09 pm | by PerryLorier | Revert |
@@ -1,11 +1,12 @@
-for
[IPv6] there are two types of address format.
[AAAA] and [A6].
+For
[IPv6] there are two types of [DNS]
address format,
[AAAA] and [A6].
-[AAAA] is the simple one,
it works just like an A record in [IPv4], but with more bits.
+[AAAA] is the simple one -
it works just like an [
A]
record in [IPv4], but with more bits.
-[A6] supports fragments of [IPv6] addresses, so you
can have
"example.com" has the fragment "2002:c000:0201", "engineering.example.com" can have the
"example.com fragment" + ":0001", and "foo.engineering.example.com" can be
"the engineering prefix" + ":0000:0000:0000:0001". This means that when example.com renumbers, they change one [DNS] record (example.com) and "pewf!"
all of their machines have been renumbered.
+[A6] supports fragments of [IPv6] addresses. You
can say
"example.com" has the fragment "2002:c000:0201", "engineering.example.com" has
"the
example.com fragment" + ":0001", and "foo.engineering.example.com" has
"the engineering prefix" + ":0000:0000:0000:0001". This means that when example.com renumbers, they change one [DNS] record (example.com) and
all of their machines have been renumbered.
-Now,
people complain that [A6] is too complicated, and prone to problems (what
is the [TTL] on the response if the fragments all have different lifetimes?, whats
the status of it if some of them
(but not all of them) are signed with [DNSSEC]?
What protection is there against DoS?).
+Some
people complain that [A6] is too complicated, and prone to problems (What
is the [TTL] on the response if the fragments all have different lifetimes? What's
the status of it if some of the entries
(but not all of them) are signed with [DNSSEC]?
What protection is there against DoS?) The [A6] people say that it's necessary for networks that regularly change IP address (eg: networks that use a dynamic 6to4 address
).
-The
[A6] people say that it
's necessary
for networks that regularly change IP address (eg: networks that use a dynamic 6to4 address)
.
+[A6] in general is the newer standard, and [AAAA] is the older standard, however, there doesn
't yet appear to be much momentum
for [A6] support
.
-[A6] in general is the newer standard, and [AAAA] is the older standard, however, there doesn't appear to be much momentum for [A6] support.
+-----
+CategoryDns
