What is the dns setting in the dhcp section for and is it worth changing it to (it costs 0.0.0.0). And how does this dns differ from wan dns?

Question

Domain Name System

I changed wan dns to dns from yandex and now i think it is necessary to change dns in the dhcp section to dns from yandex or leave it as it is?

Answer 1

This is the address that DHCP will distribute to clients as a DNS server.
If you do not understand something and everything works - leave it as it is.

Answer 2

DHCP is roughly speaking a server that issues the settings specified in it (ip address, gateway, subnet mask, and dns server) to your devices, computer, laptop, smartphone, etc. I don’t know what kind of router model you have, but I’ll assume that 0.0.0.0 means that your router is the dns server, it also receives Yandex wan dns (because you changed it) You don’t have to change dns in wan, just specify direct dns addresses in the settings DHCP. Primary and secondary dns are indicated there, if suddenly the request time to one of the dns is exceeded, then the Internet works through the second dns. But keep in mind that when changing the dns provider to others, some provider services may stop working, for example iptv.