Static IP address of WiFi requires the DNS server

I was able to confirm this on two separate MacBook Pro (various models) the two Yosemite running 10.11.4.

After assigning a static IP address to the wireless network interface, the MacBook ping to a address beyond the gateway by default unless there is also a DNS server on the wireless interface. I wouldn't need a public IP address ping DNS server.

For example:

This method works.

But it does not work:

At least I have change the DNS like this:

Then it starts working again.

I tried to initiate a capture of packets and the MacBook is not even send ping on the wireless interface requests unless there is a static DNS server assigned.

Can anyone other confirm/deny this behavior for me?

Thank you

Rob

What exactly are you trying to do?

You try to assign a Mac with a LAN IP address? If so, do it in the router by selecting an IP address on the local network to use with the Mac Machine (MAC address). This assumes that your router is your DHCP server. Otherwise, you need a DNS server that is running on your local network to be able to distribute IP of DHCP addresses.

Tags: Mac OS & System Software

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