I'm currently having problems accessing one of my clients servers and it seems that there is probably a problem with the network connection between myself and the server. However one of the things I've tried is to get the actual IP address of the server via the nslookup windows command line tool. However this does not seem to work on my computer.
Running any nslookup command simply returns 'No response from server'.
Here is an example:
C:\Windows\system32>nslookup
Server: UnKnown
Address: 2606:4700:4700::1111
*** UnKnown can't find No response from serverIn this particular example I've set up my DNS to use Cloudflare DNS but the same problem occurs if I use my provider DNS or Google DNS.
I have no problem accessing the google servers and working with the internet so obviously DNS works. Does anybody have any idea why nslookup does not work?
Here is my ipconfig /all output:
C:\Windows\system32>ipconfig /all
Windows IP Configuration Host Name . . . . . . . . . . . . : Wildfire Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Ethernet: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek PCIe GbE Family Controller Physical Address. . . . . . . . . : 9C-5A-44-3C-4D-9E DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Local Area Connection* 1: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter Physical Address. . . . . . . . . : 48-F1-7F-C2-ED-9B DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Local Area Connection* 10: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #2 Physical Address. . . . . . . . . : 4A-F1-7F-C2-ED-9A DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wi-Fi: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Killer(R) Wireless-AC 1550i Wireless Network Adapter (9560NGW) 160MHz Physical Address. . . . . . . . . : 48-F1-7F-C2-ED-9A DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::30b6:eeab:4d53:b8e4%9(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.1.107(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 21. listopada 2019. 9:09:22 Lease Expires . . . . . . . . . . : 21. listopada 2019. 11:09:21 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DHCPv6 IAID . . . . . . . . . . . : 105443711 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-24-ED-51-AC-9C-5A-44-3C-4D-9E DNS Servers . . . . . . . . . . . : 2606:4700:4700::1111 2606:4700:4700::1001 1.1.1.1 1.0.0.1 NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Bluetooth Network Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network) Physical Address. . . . . . . . . : 48-F1-7F-C2-ED-9E DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes
Ethernet adapter vEthernet (Default Switch): Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Hyper-V Virtual Ethernet Adapter Physical Address. . . . . . . . . : 00-15-5D-F7-39-02 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::fd51:db6:50fd:5d6b%23(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.46.225(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.240 Default Gateway . . . . . . . . . : DHCPv6 IAID . . . . . . . . . . . : 385881437 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-24-ED-51-AC-9C-5A-44-3C-4D-9E DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1 fec0:0:0:ffff::2%1 fec0:0:0:ffff::3%1 NetBIOS over Tcpip. . . . . . . . : Enabled
C:\Windows\system32>1 Answer
You have IPv6 addresses of (CloudFlare's) DNS servers configured... but you don't actually have an IPv6 address of your own – your Internet access is IPv4-only.
(Many programs will automatically retry with a different DNS server if the first one is unreachable, but apparently nslookup does not – it'll always be trying the 1st server in the list.)
Open the IPv6 configuration window (e.g. through ncpa.cpl) and set "DNS servers" to "Automatic".
