On June 8, 2011 was world IPv6 day and I shared some VPS boxes. Only one guy wants Ubuntu 11.04 – no problem he get it.
I was painfully remembered that Ubuntu.com has still some problems with AAAA record for security.ubuntu.com… They have no records:)
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root@freebox:~# aptitude update Err http://security.ubuntu.com natty-security Release.gpg Could not resolve 'security.ubuntu.com' Err http://de.archive.ubuntu.com natty InRelease
sed -i 's/\/de/\/ru/g' /etc/apt/sources.list
sed -i 's/security.ubuntu.com/ftp.belnet.be\/mirror\/ubuntu.com/g' /etc/apt/sources.list