Hi therer,I have a windows 2008 enterprise server acting as a DC and a DNS server. It's IP address is 192.168.0.1 and it's default gateway is 192.168.0.254.My problem is that it can't ping the gateway. All other machines on the same network segment can.From the server if I ping the machine using it's name I only get a reply from an IPv6 address but not from the ipv4 address. If I turn off IPv6 and ping the server again from the machine I just get a reply from ::1: which does not look like any sort of IP address to me. :-)I can ping the server from clients correctly.Any help would be appreciated.Regards,Christian

Hello Christian, You may want to try pinging with the following command it forces IPV4 ping -4 machinename. Also I would run the following command to turn off the firewall just to test. Netsh advfirewall set allprofiles state off Test then turn the firewall back on Netsh advfirewall set allprofiles state on ::1: is the localhost address in IPV6. I havent tested the setting below in Windows 2008. 929852How to disable certain Internet Protocol version 6 (IPv6) components in Windows Vistahttp://support.microsoft.com/default.aspx?scid=kb;EN-US;929852 A Netmon or Wireshark trace should also help determine if the packet is leaving the server. Hope this helps, Louis Hardy

Hi Louis,Thanks a lot for this. I have never used IPv6 (yet!!) so did not realise that ::1: was localhost.I will try your suggestions and get back to you.I have managed to get the server to ping the gateway. I think the router was not working as when I replaced it all was well. It's not been a good week!!! :-)I'll let you know how I get on.Cheers,Christian