Nefunkční ping i přesto, že nslookup záznam najde

On my workstation, I can find the machine I want to connect to in DNS with nslookup:

nslookup wolfman.company.com

Server: dns.company.com
Address: 192.168.1.38

Name: wolfman.company.com
Address: 192.168.1.178

But, when I try to connect to that machine, I get an error telling me that the machine can't be found (i.e., can't be looked up in DNS):

C:\> ping wolfman
Ping request could not find host wolfman. Please check the name and try again.

I am able to connect if I use the IP address directly:

C:\> ping 192.168.1.178

Pinging 192.168.1.178 with 32 bytes of data:

Reply from 192.168.1.178: bytes=32 time=41ms TTL=126
Reply from 192.168.1.178: bytes=32 time=41ms TTL=126
Reply from 192.168.1.178: bytes=32 time=44ms TTL=126
Reply from 192.168.1.178: bytes=32 time=38ms TTL=126

řešení

I believe that nslookup opens a winsock connection on the DNS port and issues a query, whereas ping uses the DNS Client service. You could try and stop this service and see whether this makes a difference.

Some commands that will reinitialize various network states :

Reset WINSOCK entries to installation defaults :
```
netsh winsock reset catalog
```
Reset TCP/IP stack to installation defaults :
```
netsh int ip reset reset.log
```
Flush DNS resolver cache :
```
ipconfig /flushdns
```
Flush routing table :
```
route /f
```
(reboot required)

Zdroj: http://superuser.com/questions/495759/why-is-ping-unable-to-resolve-a-name-when-nslookup-works-fine