At 2010-09-10£¬"Walter Dnes" wrote: >On Tue, Sep 07, 2010 at 09:51:48PM +0800, ?? wrote > >> Thinks everyone: >> DNS woks well for me. i can ping www.google.com. Just can't access >> it in web-browsers without rebooting system.Sometimes I thought mybe >> it's the problem of Power.But now i doubt about it! Because even >> while I am watching videos online( about half an our) it happens. >> Here is the wireshark capture result: I don't know why there are >> so manay "RTS". > > I had a problem authenticating with the wifi domain at the local >library when I first tried it. It turns out that the local library >intercepts the first http:// attempt and sends you to a page win the >10.0.0.0/8 block. My iptables configuration was copied from my desktop, >which had no reason to expect traffic from that area. So it blocked >10.0.0.0/8 it, which prevented me from signing in. > > Your situation sounds like you have a half-hour lease on an IP >address, and something goes wrong when the lease is renewed, or >attempted to be renewed. A couple of suggestions... > >- heavy-handed "solution"... can you set up dhcpcd to get you a longer > lease than 30 minutes on your IP address? > >- check your iptables rulesets and logs. Do you have any iptables rules > that generate RST's at your end? If you get desparate, try running > for 45 minutes with iptables turned off > >- what does your netbook's /etc/resolv.conf look like... > 1) before going online > 2) after going online successfully > 3) after a half-hour > >-- >Walter Dnes > Thinks First , There is no iptables severing no my box; Second : The /etc/resolve.conf keeps the same all the times; I tried to restart network , eth0 , dhcpd, NetworkManager but nothing helps,The same thing happens whilel using static IP address. I've attached Wiresharp data ,Hope someone can help.