I have another network connection issue in Eclipse. My first issue was related to DNS library lib32nss-dns and it was described in this post.
The recent network issue causes an error:
Network is unreachable
during Update Software or any Subclipse operations.
The solution was in setting the parameter:
net.ipv6.bindv6only = 0
in the file /etc/sysctl.d/bindv6only.conf.
# sudo nano -w /etc/sysctl.d/bindv6only.conf
and reboot your system to apply changes.
PS: thanks Benjamin Eikel for solution.


This worked to me.
Thanks!!