eth0 using loopback instead of router
I have a strange problem with my new PC. This is an ASUS P8z77-V LK mainboard, with Realtek 8111F Gigabit LAN Controller and Slackware 13.37 with 18.104.22.168 kernel.
The Internet connection was unacceptably slow and sometimes connection lost. So I started to monitoring what is happening and iptraf showed me the eth0 sending datas to eth0 through lo ???
But sometimes everything was ok, for a while it using the router then it using again the loopback.
I tried to disable lo but it not solved the problem because sometimes just nothing happening for a while, eth0 just waiting and waiting.
So now the symptom is eth0 is work for a short time then waiting for long time.
Is it could be a driver problem?