DHCP Client cannot ping Gateway

RouterOS Beginner Basics
1

Hello everyone

My device is RB850Gx2, and I currently have a DHCP problem.

The device has obtained the IP from DHCP, but cannot ping the Gateway.

And what’s more weird is that all devices before the problem can be pinged normally.

After discovering the problem, all devices added later can grab IP from DHCP normally.

But can’t ping Gateway,

What is the problem?

thanks