How does the Pocket Beagle assign 192.168.7.2 to itself and 192.168.7.1 to the computer it is connected to via USB?

I understand that it is running some kind of local DHCP server but specifically what is the Pocket Beagle/Beagle Bone Black running that allows it to allocate the address 192.168.7.2 to itself and 192.168.7.1 to the computer which it is connected to? And if I wanted to change those addresses to something else how would I be able to do it?

This is from BeagleBoard.org:

If connected via USB, a network adapter should show up on your computer. Your Beagle should be running a DHCP server that will provide your computer with an IP address of either 192.168.7.1 or 192.168.6.1, depending on the type of USB network adapter supported by your computer's operating system. Your Beagle will reserve 192.168.7.2 or 192.168.6.2 for itself.

If your Beagle includes WiFi, an access point called "BeagleBone-XXXX" where "XXXX" varies between boards. The access point password defaults to "BeagleBone". Your Beagle should be running a DHCP server that will provide your computer with an IP address in the 192.168.8.x range and reserve 192.168.8.1 for itself.

On my BeagleBone Blue with Debian Buster I found the configurations in the /etc/dnsmasq.d/SoftAp0 file:

And this is the service: