Ubuntu: apt-get update failures

[TGates]

Just in case some of you start getting these errors, here's the temporary solution until the world turns to ipv6:
NOTE: I am not sure if this is also true for CentOS (yum update) at this time.

Problem: ISPs are starting to setup an internal IPv6 network in preparation for eventually connecting to the IPv6 internet. As a result, servers in this network now try to connect to *.ubuntu.com via its IPv6 address by default when running apt-get.

SOLUTION:
Quoted from: http://askubuntu.com/questions/574569/ap...ubuntu-com

Edit [url=http://manpages.ubuntu.com/gai.conf.5][/url]

Code:

gai.conf

Code:

sudo vim /etc/gai.conf

change line ~54 to uncomment the following:

Code:

precedence ::ffff:0:0/96  100

write and quit:

Code:

:wq

---

CAUTION
Look out line 50 which looks almost identical:

Code:

precedence ::ffff:0:0/96  10

This is the wrong line. Go ~4 lines down and you'll find the correct line to uncomment because it ends with

Code:

100

instead of

Code:

10

OTHER RELATED ISSUES:

1. file_get_contents() fails
   
2. webmin fails to load
   
3. slow loading of some sentora modules (xbilling for one)
   
4. higher than normal CPU and RAM usage