I noticed that
dig google.com produces four distinct IP addresses. What does that mean? It could be
- use any, doesn't matter
- try the first, if it doesn't respond, try the next (and so forth)
- or ...?
Or is this just supposed to be round-robin? (If so, why would it return 4 values, instead of just 1?)
I'm sort of hoping it means that browsers would try all four in sequence until they got one that works.
Here's what I'm getting:
;; QUESTION SECTION:` ;google.com. IN A ;; ANSWER SECTION: google.com. 293 IN A 220.127.116.11 google.com. 293 IN A 18.104.22.168 google.com. 293 IN A 22.214.171.124 google.com. 293 IN A 126.96.36.199 ;; AUTHORITY SECTION: google.com. 81797 IN NS ns2.google.com. google.com. 81797 IN NS ns4.google.com. google.com. 81797 IN NS ns1.google.com. google.com. 81797 IN NS ns3.google.com. ;; ADDITIONAL SECTION: ns1.google.com. 255049 IN A 188.8.131.52 ns2.google.com. 230304 IN A 184.108.40.206 ns3.google.com. 231860 IN A 220.127.116.11 ns4.google.com. 58735 IN A 18.104.22.168`