How To Create pfsense Let's Encrypt Wildcard Certificates using HAProxy

Networking & Firewalls
2

In this video, your PurpleNAS has an IP of 192.168.1.8 but when you configure the DNS Resolver, you set the IP to 192.168.1.1.
What happens when you want to add another entry in host overrides, do you use the same IP (i.e. 192.168.1.1)? How does pfsense not confuse this with the IP of the sg1100 router, which also sits at 192.168.1.1.

Thanks