No IPv6 connectivity but have IPv6 on non gecko browsers

2016-10-12 Thread Desiree
My ISP turned off perfectly good, working IPv6 on my Arris Surfboard 
6183 modem in May due to security issues.  It was working fine on 
SeaMonkey 2.40 (and Fx and Pale Moon) before it was turned off.


My ISP updated the firmware on the modem yesterday so I again have IPv6 
native connectivity on Vivaldi and IE 10.  However, on SeaMonkey, and 
the other gecko browsers, and old Opera 12.18, I have no IPv6 
connectivity.


I can't figure out what the problem is... any ideas?  I have made sure 
to temporarily disable any extensions, etc that could affect IPv6 
connectivity.  I get a message for dslreports.com IPv6 speed test, on 
SeaMonkey (new profile), that it cannot reach any IPv6 server.  The test 
works flawlessly on Vivaldi using IPv6.  The sites that let you test if 
you have IPv6 connectivity show NO IPv6 for SeaMonkey (and Fx, Pale Moon 
and old Opera) but show full native IPv6 connectivity for Vivaldi and IE 
10.

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Re: No IPv6 connectivity but have IPv6 on non gecko browsers

2016-10-12 Thread Desiree

On 10/12/2016 4:10 AM, Desiree wrote:

My ISP turned off perfectly good, working IPv6 on my Arris Surfboard
6183 modem in May due to security issues.  It was working fine on
SeaMonkey 2.40 (and Fx and Pale Moon) before it was turned off.

My ISP updated the firmware on the modem yesterday so I again have IPv6
native connectivity on Vivaldi and IE 10.  However, on SeaMonkey, and
the other gecko browsers, and old Opera 12.18, I have no IPv6
connectivity.

I can't figure out what the problem is... any ideas?  I have made sure
to temporarily disable any extensions, etc that could affect IPv6
connectivity.  I get a message for dslreports.com IPv6 speed test, on
SeaMonkey (new profile), that it cannot reach any IPv6 server.  The test
works flawlessly on Vivaldi using IPv6.  The sites that let you test if
you have IPv6 connectivity show NO IPv6 for SeaMonkey (and Fx, Pale Moon
and old Opera) but show full native IPv6 connectivity for Vivaldi and IE
10.

I figured it out today when I had a refreshed mind to apply to the 
problem.  I use a local proxy since 2001 and it works fine on IE 10 and 
Vivaldi if I simply bypass it temporarily (easy to do by right click on 
its icon in the systray and checking bypass) to use IPv6.  On gecko 
based browsers (and old Opera) bypass is not sufficient.  On these 
browsers, I have to go into Options/Network/Connections and actually set 
the connection to No Proxy (direct connection) and then IPv6 works.

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