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56885201
Ain't Nothin' But A Hound Dawg
Premium
join:2005-05-01
Dawg House

1 edit
reply to whfsdude

Re: [IPv6] IPV6 Issues

said by whfsdude:

said by nightwalker:

Windows7 has a built-in 6to4 support that seems to be available on-demand. Comcast support for ipv6 will assign you a physical IP and isn't available nationwide yet.

6to4 doesn't work behind NAT. I think you're thinking of Teredo here.

Interesting. I am on a Windows XP PC behind a WNR1000v2-VC NAT router that is using the Comcast 6t04 relay, and IPv6 seems to be working just fine for me (with the MS Teredo explicitly disabled):





C:\>netsh int ipv6 show int
Querying active state...
 
Idx  Met   MTU    State         Name
---  ----  -----  ------------  -----
  7     0   1500  Connected     Local Area Connection
  3     1   1280  Connected     6to4 Pseudo-Interface
  2     1   1280  Connected     Automatic Tunneling Pseudo-Interface
  1     0   1500  Connected     Loopback Pseudo-Interface
 
C:\>netsh int ipv6 show teredo
Teredo Parameters
---------------------------------------------
Type                    : default
Server Name             : default
Client Refresh Interval : default
Client Port             : default
State                   : offline
Error                   : none
 
C:\>netsh int ipv6 show addr
Querying active state...
 
Interface 7: Local Area Connection
 
Addr Type  DAD State  Valid Life   Pref. Life   Address
---------  ---------- ------------ ------------ -----------------------------
Temporary  Preferred        37m11s        1m42s 2002:XXXX:XXXX:XXXX:,,,
Temporary  Deprecated       37m11s           0s 2002:XXXX:XXXX:XXXX:,,,
Public     Preferred        37m11s       27m11s 2002:XXXX:XXXX:XXXX:,,,
Link       Preferred      infinite     infinite fe80::XXXX:XXXX:XXXX:,,,
 
Interface 2: Automatic Tunneling Pseudo-Interface
 
Addr Type  DAD State  Valid Life   Pref. Life   Address
---------  ---------- ------------ ------------ -----------------------------
Link       Preferred      infinite     infinite fe80::5efe:10.224.87.199
Link       Preferred      infinite     infinite fe80::5efe:192.168.9.100
 
Interface 1: Loopback Pseudo-Interface
 
Addr Type  DAD State  Valid Life   Pref. Life   Address
---------  ---------- ------------ ------------ -----------------------------
Loopback   Preferred      infinite     infinite ::1
Link       Preferred      infinite     infinite fe80::1
 
C:\>tracert -6 ipv6.google.com
 
Tracing route to ipv6.l.google.com [2607:f8b0:4002:802::1012]
over a maximum of 30 hops:
 
  1     1 ms    <1 ms    <1 ms  2002:XXXX:XXXX:XXXX:,,,
  2    21 ms    21 ms    22 ms  2002:c058:6301::
  3    22 ms    21 ms    21 ms  ge-7-2-ur02.s3ndigital.ga.atlanta.comcast.net [2001:558:fe12:1::1]
  4    26 ms    24 ms    22 ms  xe-2-0-1-0-ar01.d1stonemtn.ga.atlanta.comcast.net [2001:558:140:22::1]
  5    46 ms    43 ms    59 ms  pos-2-14-0-0-cr01.350ecermak.il.ibone.comcast.net [2001:558:0:f73d::1]
  6    47 ms    46 ms    46 ms  pos-1-0-0-0-pe01.350ecermak.il.ibone.comcast.net [2001:558:0:f588::2]
  7    34 ms    33 ms    31 ms  2001:559::382
  8    59 ms    32 ms    31 ms  2001:4860::1:0:3f7
  9    33 ms    57 ms    52 ms  2001:4860::1:0:5db
 10    54 ms    67 ms    53 ms  2001:4860::1:0:489
 11   107 ms    52 ms    52 ms  2001:4860:0:1::164
 12    61 ms    52 ms    54 ms  atl14s08-in-x12.1e100.net [2607:f8b0:4002:802::1012]
 
Trace complete.
 
 


--
Some days you're the dog; some days you're the hydrant.

34764170

join:2007-09-06
Etobicoke, ON

said by 56885201:

Interesting. I am on a Windows XP PC behind a WNR1000v2-VC NAT router that is using the Comcast 6t04 relay, and IPv6 seems to be working just fine for me (with the MS Teredo explicitly disabled):

Your network setup is not setup as he described. It would if you have an IPv4 router (using NAT) with your IPv6 router sitting behind that or what is more common an individual host (Windows, an open source UNIX, etc.) host with a user wanting to use 6to4 through a router without IPv6 support and that will not work.


56885201
Ain't Nothin' But A Hound Dawg
Premium
join:2005-05-01
Dawg House

said by 34764170:

said by 56885201:

Interesting. I am on a Windows XP PC behind a WNR1000v2-VC NAT router that is using the Comcast 6t04 relay, and IPv6 seems to be working just fine for me (with the MS Teredo explicitly disabled):

Your network setup is not setup as he described. It would if you have an IPv4 router (using NAT) with your IPv6 router sitting behind that or what is more common an individual host (Windows, an open source UNIX, etc.) host with a user wanting to use 6to4 through a router without IPv6 support and that will not work.

My post was in response to the statement below that in no way describes any particular network topology other than being behind a NAT router:

said by whfsdude:

6to4 doesn't work behind NAT. I think you're thinking of Teredo here.

And, if you follow the post chain back, you will see that remark was a reply to another post that referenced the OP's network topology. The OP's network topology is very similar to mine (a NAT router using a 6to4 tunnel to reach Comcast's 6to4 relay).
--
Some days you're the dog; some days you're the hydrant.

34764170

join:2007-09-06
Etobicoke, ON

1 recommendation

said by 56885201:

My post was in response to the statement below that in no way describes any particular network topology other than being behind a NAT router:

said by whfsdude:

6to4 doesn't work behind NAT. I think you're thinking of Teredo here.

And, if you follow the post chain back, you will see that remark was a reply to another post that referenced the OP's network topology. The OP's network topology is very similar to mine (a NAT router using a 6to4 tunnel to reach Comcast's 6to4 relay).

When he says "behind NAT" and also mentions Teredo that does imply a particular network topology and it is not as you have described. His post was in reference to a particular setup of 6to4 which is not how you have things setup.


56885201
Ain't Nothin' But A Hound Dawg
Premium
join:2005-05-01
Dawg House

said by 34764170:

said by 56885201:

My post was in response to the statement below that in no way describes any particular network topology other than being behind a NAT router:

said by whfsdude:

6to4 doesn't work behind NAT. I think you're thinking of Teredo here.

And, if you follow the post chain back, you will see that remark was a reply to another post that referenced the OP's network topology. The OP's network topology is very similar to mine (a NAT router using a 6to4 tunnel to reach Comcast's 6to4 relay).

When he says "behind NAT" and also mentions Teredo that does imply a particular network topology and it is not as you have described. His post was in reference to a particular setup of 6to4 which is not how you have things setup.

You might want to consider going back and actually reading the posts in this thread, and see for yourself that the OP is running behind a NAT router with 6to4 enabled (just like me), and the OP's configuration is what this thread is about, not some imaginary network that only you see (and are discussing).

FWIW, since you obviously overlooked that post (and probably won't bother to look again), the OP's problem was fixed by enabling 6to4 instead of using auto config in the router (because the OP's connection does not yet have native IPv6 enabled):

said by Manco9:

Again thanks for the replies everyone! After putting the router on 6to4 instead of auto-detect yesterday I haven't lost ipv6 connectivity.

--
Some days you're the dog; some days you're the hydrant.


NetFixer
Snarl For The Camera Please
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage

1 edit

1 recommendation

reply to 34764170

said by 34764170:

said by 56885201:

My post was in response to the statement below that in no way describes any particular network topology other than being behind a NAT router:

said by whfsdude:

6to4 doesn't work behind NAT. I think you're thinking of Teredo here.

And, if you follow the post chain back, you will see that remark was a reply to another post that referenced the OP's network topology. The OP's network topology is very similar to mine (a NAT router using a 6to4 tunnel to reach Comcast's 6to4 relay).

When he says "behind NAT" and also mentions Teredo that does imply a particular network topology and it is not as you have described. His post was in reference to a particular setup of 6to4 which is not how you have things setup.

I think that you and Coon Dawg are just arguing semantics. I see your theoretical point, but the point that Coon Dawg is trying to make is that the OP is indeed running behind a Netgear router that is using 6to4 (enabling 6to4 in the router is what fixed the problem that triggered this thread).

--
History does not long entrust the care of freedom to the weak or the timid.
-- Dwight D. Eisenhower


whfsdude
Premium
join:2003-04-05
Washington, DC
Reviews:
·Comcast
reply to 56885201

said by 56885201:

Interesting. I am on a Windows XP PC behind a WNR1000v2-VC NAT router that is using the Comcast 6t04 relay, and IPv6 seems to be working just fine for me (with the MS Teredo explicitly disabled):

I understand your router is doing 6to4 and announcing it (just like it would with ULA. or a unicast global).

My point was more to the fact that the poster had said Windows was using the built in 6to4 adapter. This is where Windows itself open a 6to4 tunnel. This is incorrect as it cannot be done behind NAT which should probably be pointed out so others browsing don't go enable 6to4 behind their router.


56885201
Ain't Nothin' But A Hound Dawg
Premium
join:2005-05-01
Dawg House

1 recommendation

said by whfsdude:

said by 56885201:

Interesting. I am on a Windows XP PC behind a WNR1000v2-VC NAT router that is using the Comcast 6t04 relay, and IPv6 seems to be working just fine for me (with the MS Teredo explicitly disabled):

I understand your router is doing 6to4 and announcing it (just like it would with ULA. or a unicast global).

My point was more to the fact that the poster had said Windows was using the built in 6to4 adapter. This is where Windows itself open a 6to4 tunnel. This is incorrect as it cannot be done behind NAT which should probably be pointed out so others browsing don't go enable 6to4 behind their router.

Ahh, OK. Thank you for the clarification.
--
Some days you're the dog; some days you're the hydrant.