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Forums » Up and Running » IPv6 » AT&T 4to6 relay not working?
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awasser1

join:2004-03-30
Bloomfield, CT

reply to jfeise
Re: AT&T 4to6 relay not working?

Yep the SpeedStream 4100 does not work with IPV6. I found that out after three weeks. I switched to the UWire one I had and it seems to work better. I am still trying to make everything work with windows 7 and server 2008 R2. The server works on ipv6 just fine but the pc computer still tries to pickup ipv4 first. when u put ping -6 it works ok. so i am still trying to fix it.. fun fun fun.

Alec
to forum · permalink · · 2009-07-24 16:32:14 · Reply to this


Datlev
Premium
join:2002-02-15
Ashburn, VA
·Vonage
·Verizon FIOS
said by awasser1 See Profile :

I am still trying to make everything work with windows 7 and server 2008 R2. The server works on ipv6 just fine but the pc computer still tries to pickup ipv4 first. when u put ping -6 it works ok.
This is usually caused by windows not *thinking* there is a valid global ipv6 address and route associated with an active network interface.

[snippet from MSDN]
DNS Query Behavior

The DNS Client service in Windows Vista has been designed to minimize the impact on DNS servers when performing DNS name queries through the following behavior:

-If the host has only link-local or Teredo IPv6 addresses assigned, the DNS Client service sends a single query for A records.

-If the host has at least one IPv6 address assigned that is not a link-local or Teredo address, the DNS Client service sends a DNS query for A records and then a separate DNS query to the same DNS server for AAAA records. If an A record query times out or has an error (other than name not found), the corresponding AAAA record query is not sent.

[/snippet]

See here: »technet.microsoft.com/en-us/libr···035.aspx

You can see if this is indeed the case by using wireshark or netmon to examine the dns queries/responses.

Good Luck.

--Dave
to forum · permalink · · 2009-07-27 09:32:28 · Reply to this
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