Quote:
Originally Posted by pilotbob
Both of my routers provide a DHCP server. But, neither of them actually contain a DNS server. What router do you have that is also a DNS server?
BOb
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Hey Bob,
There's DNS server's and then there's DNS servers.
Have a read up on dns caching and dnsmasq. The way it works is that your off the shelf router keeps track of DNS queries it has made and keeps them in a local DNS cache. Whenever it doles out a an IP address and hostname to a machine on the LAN its managing via DHCP it adds an ip/hostname entry to its DNS cache. If you look on the machine that received the IP address and do an ipconfig /all (on windows at least) you'll see that the DNS server address matches the DHCP server address which is your off the shelf router/AP/firewall's IP. What happens is that your PC will query the local "DNS server", the router/AP/firewall just queries its local cache and responds if it gets a hit otherwise it forwards the query to your ISP's full blown dns server.
Hope that helps.