No Connectivity Caused By TCP/IPv6?

[SpikedCola]

Well wierd thing happened today. Out of nowhere I lost connectivity to everything except FTPs and MSN. No webpages would load, nothing. So of course, the first thing I checked was the DNS servers.

C:\Users\J Skoba>ping www.yahoo.com
Ping request could not find host www.yahoo.com. Please check the name and try again.

Okay, maybe if I try the IP instead of the www address

C:\Users\J Skoba>ping 216.109.112.135

Pinging 216.109.112.135 with 32 bytes of data:

Reply from 67.201.170.195: Destination host unreachable.
Reply from 67.201.170.195: Destination host unreachable.
Reply from 67.201.170.195: Destination host unreachable.
Reply from 67.201.170.195: Destination host unreachable.

Dang, nothing. Hey wait a minute, that IP looks familiar... An ipconfig brings this up:

DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::602d:4377:a4f4:3330%9(Preferred)
IPv4 Address. . . . . . . . . . . : 67.201.170.195(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.254.0
Lease Obtained. . . . . . . . . . : February-12-08 9:29:08 PM
Lease Expires . . . . . . . . . . : February-12-08 10:29:07 PM

Now why would pinging a website's IP cause my own IP to reply? I have no f'ckin clue. So I caved and called my ISP. After a bit of simple stuff (reboot the computer, reboot the modem, check the cables), I mentioned I was on Vista, and she told me to try unchecking TCP/IPv6 in the network connection's properties. 'lo and behold, it works again.

Now what I want to know is why this worked? She doesnt know, thats just what she was told to do, and Im stumped.

PS. Yes yes, I know, Im posting my IP... Well, for the script kiddie who thinks theyre going to hack me... Go for it. Dynamic IP ftw.

 

[SpikedCola]

Bump.

 

[Really Useful Matt]

IPv6 works in a totally different way to IPv4. Given that v4 is the standard on the internet, and it's the type issued by your ISP, you need to use that.

The best thing to do would be to completely uninstall the v6 from your network card, it's totally unnecessary, and I have no idea why it was there in the first place.

 

[superdave1984]

IPv6 is supposed to be the future of the internet and I am sure it will be. Someday.

 

[CntdwnToExtn]

ipv6 will give my microwave and fridge an ip address :drool:
2^128 = 340,282,366,920,938,500,000,000,000,000,000,000,000

i don't even know what that fricken number is

anyway,
still wierd that ipv6 somehow got enabled....unless someone else played with some settings.

 

[KSoD]

IPv6 is in Vista. It should not be enabled by default though. IPv4 is just about done for and IPv6 will be taking over sooner rather than later. IPv4 is almost out of IP addresses. That is why IPv6 was invented and now being implmented.

My advice SC is to disable the IPv6 for now. It isnt necessary to have it on and most IP's can not account for its use yet.