First, the misconceptions:
- The root hints (names and IP addresses of the 13 root servers) are hardly ever "hard coded in network hardware". Network hardware such as a router, may sometimes have a built in DNS resolver if it happens to also have a DHCP server, but if it does…
router, may sometimes have a built in DNS resolver if it happens to also have a DHCP server, but if it does, it's usually just a forwarding resolver that passes the query along to an upstream nameserver (obtained from an ISP) if it doesn't know the answer
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