What does the cache.dns file show?
From: Webster [mailto:webs...@carlwebster.com]
Sent: Monday, March 26, 2012 3:21 PM
To: NT System Admin Issues
Subject: DCDiag and IPv6 Root Hints
Trying to understand why on one Server 2003 Std Edition SP2 domain controller,
the following shows up in DCDiag:
TEST: Forwarders/Root hints (Forw)
Recursion is enabled
Forwarders are not configured on this DNS server
Root hint Information:
Name: a.root-servers.net. IP: 198.41.0.4 [Valid]
Name: a.root-servers.net. IP: 2001:503:ba3e::2:30 [Invalid
(unreachable)]
Name: b.root-servers.net. IP: 192.228.79.201 [Valid]
Name: c.root-servers.net. IP: 192.33.4.12 [Valid]
Name: d.root-servers.net. IP: 128.8.10.90 [Valid]
Name: d.root-servers.net. IP: 2001:500:2d::d [Invalid
(unreachable)]
Name: e.root-servers.net. IP: 192.203.230.10 [Valid]
Name: f.root-servers.net. IP: 192.5.5.241 [Valid]
Name: g.root-servers.net. IP: 192.112.36.4 [Valid]
Name: h.root-servers.net. IP: 128.63.2.53 [Valid]
Name: i.root-servers.net. IP: 192.36.148.17 [Valid]
Name: j.root-servers.net. IP: 192.58.128.30 [Valid]
Name: k.root-servers.net. IP: 193.0.14.129 [Valid]
Name: l.root-servers.net. IP: 199.7.83.42 [Valid]
Name: m.root-servers.net. IP: 202.12.27.33 [Valid]
Just the A and D root hint servers also show an IPv6 address.
The DC does not have IPv6 installed. When I look at the root hints in the DNS
server properties there are no IPv6 entries and the cache.dns file does not
have any IPv6 entries. Where are these two IPv6 root hint entries coming from?
Thanks
Carl Webster
Consultant and Citrix Technology Professional
http://www.CarlWebster.com<http://www.carlwebster.com/>
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