Dear All I am using Ubuntu 14.04 LTS Unfortunately, I am facing a strange ping error. When I ping www.google.com It is OK However, when I ping any numerical IP such as 127.0.0.1 I I got the following error Ping sendmsg: invalid argument I tried to use /bin/ping xxxxxxx But, I got same error. May you please help me with this. Best regards, Amer