I just discovered that disabling IPv6 solves the problem. I'm on Ubuntu 14.04 64bit. I did not apply any other workaround described above.
I used that procedure: http://askubuntu.com/questions/440649/cant-disable-ipv6-in-ubuntu-14-04
I just discovered that disabling IPv6 solves the problem. I'm on Ubuntu 14.04 64bit. I did not apply any other workaround described above.
I used that procedure: http:// askubuntu. com/questions/ 440649/ cant-disable- ipv6-in- ubuntu- 14-04