On Mon, Mar 03, 2003 at 07:17:17PM -1000, Bill Luoma wrote: > I'm wondering about nameserver config. > Specifically, caching. It seems like my provider, > road runner, hardly does any. For example, > I repeatedly request the page news.google.com. > I imagine many other hawaii customers do the same > thing every day. Yet, this entry is not cached > in their dns. Is this efficient for them, a policy, an error or just rude? > Or do they have a caching name server I don't know about?
The TTL for news.google.com is set to 5 minutes. However, google sets the TTL for their nameservers to be 4 days, but RR's configuration limits the max TTL to 24 hours. From my vantage point, the DNS server does cache the results. What are you seeing that I am not? > Here's a trace from dns1.hawaii.rr.com: > DnsClient::ReadResponse recv'd: 179 bytes > from: UDPClientConnection: 24.25.227.64:53 > dn: news.google.com I have never seen a utility that queries DNS in such a way. I use dig to troubleshoot DNS myself. -Vince
