IPV6 Problems

[VMC]

I've noticed that the current Yakkety and current Xenial both have problems with IPV6.


For example, using wget:
'wget https://dl.google.com/linux/direct/g...rent_amd64.deb'
Output:
--2016-09-08 08:31:47-- https://dl.google.com/linux/direct/g...rent_amd64.deb
Resolving dl.google.com (dl.google.com)... 2607:f8b0:4007:80b::200e, 216.58.217.206
Connecting to dl.google.com (dl.google.com)|2607:f8b0:4007:80b::200e|:443...
Then it stops output.

If I then force IPV4:
'wget -4 https://dl.google.com/linux/direct/g...rent_amd64.deb'
The download starts immediately.

This also happens using 'zsync'. I have no way of forcing ipv4 on zsync.

Futhermore:

'ping6 www.google.com'
Output:
PING www.google.com(lax28s01-in-x04.1e100.net) 56 data bytes
...
Output stops, with no further response.

Where as:
ping www.google.com , I get an immediate response.

I disabled IPV6 using this method found here and here .

To see if IPV6 is enabled, from a terminal type: 'ifconfig' , and 'ip addr list'. Look for inet6 outputs.

Regarding the kernel, ArchWiki has more information:

Adding to the kernel line "ipv6.disable_ipv6=1" , disables the IPV6 from the kernel. Now 'zsync' , 'wget' work as expected.

I'm unsure what programs need IPV6 , as stated in ArchWiki.

I have no issue downloading from the browser with IPV6 enabled.

Several years ago, this came up:https://ubuntuforums.org/showthread....=IPV6+Problems
I haven't had any problems until this year with Yakkety and current Xenial.

Please tell me your experiences.

[zika]

Or leave it all as it was by default and edit /etc/gai.conf...

[VMC]

Thanks for hint. I found out now why newer Xenial and current Yakkety updates and downloads fail:

Reading this, explains it all:http://terokarvinen.com/2016/prefer-...e-ffff0096-100
There was a bug reported last year.