To install libc6 just follow these instructions.
/ubuntu/vivid/main///install/index.html GNU C Library Ubuntu 15.04 libs 2.21-0ubuntu4
sudo apt-get install libc6
Which will install libc6 and any other packages on which it depends.
Package | libc6 |
Version | 2.21-0ubuntu4 |
Maintainer | Ubuntu Developers |
Description | GNU C Library |
Distro | ubuntu |
Release | vivid |
Repo | main |
Section | libs |