IPV6 issues keep coming back no matter what build.

[William Earl]

I use 6RD with my ISP and IPv6 keep breaking. Any pages on ipv6 start running slow or stop working all together a router reboot does not fix it, I can tell its a ipv6 site when I ping the site it replys with an ipv6 address. only fix is to turn IPv6 off. Any Ideas? Its Centurylink 50meg/20meg VDSL2

 

[bbunge]

Set the Tunnel MTU to 1280 in IPV6. Seems to work best for me on the same ISP.

 

[bbunge]

Well, I seem to be having similar issues on Centurylink. Using .65 beta 3. Connection,DNS response, seems to slow after a couple of hours. Switched to Google DNS with no apparent improvement. My guess is the ISP 6RD is having issues?

 

[bbunge]

Another day, another try of IPV6 on Centurylink 6RD. Have set the WAN DNS and the IPV6 DNS to Google. Set the Tunnel MTU to 1480. Running Merlin .65 Beta 3.

So far so good! One speed test that does IPV4 and IPV6 showed IPV6 faster! Will see how the day progresses...

Edit: One full day with 6RD running with no issues. Still running as fast as it did yesterday.