Canon EOS-1D X Instruction Manual page 86

Handling Error Messages
Is the DHCP server functioning correctly?

 Check the DHCP server settings to make sure it is functioning
correctly as a DHCP server.
 If applicable, ask your network administrator to ensure that the DHCP
server can be used.
22: No response from DNS server
What to check on the camera
Is the camera's network setting set to [Auto setting], or its IP

address setting set to [Auto assign]?

If you are not using a DNS server, set the camera's DNS address
setting to [Disable] (p.17).
On the camera, does the DNS server's IP address setting match

the server's actual address?
 Configure the IP address on the camera to match the actual DNS
server address (p.17, 97).
What to check on the DNS server
Is the DNS server on?


Turn the DNS server on.
Are the DNS server settings for IP addresses and the

corresponding names correct?

On the DNS server, make sure IP addresses and the corresponding
names are entered correctly.
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