Multiple Issues with Ping6

[jean-christophe manciot]

- ping6 always use the same source address, whatever the destination is; it should use one of the IPv6 addresses of the connected interface it is sending the traffic on, by default
- ping6 cannot use a specified source interface/address using the -I option, which could have been used as a workaround to the previous issue

All the details are available here: http://ubuntuforums.org/showthread.php?t=2277776&p=13295631#post13295631

root@msi-ge60:/# lsb_release -rd
Description: Ubuntu 15.04
Release: 15.04

root@msi-ge60:/# apt-cache policy iputils-ping
iputils-ping:
  Installed: 3:20121221-5ubuntu2
  Candidate: 3:20121221-5ubuntu2