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@@ -135,6 +135,21 @@ used here in a subsequent run. For example, with `-C 60s` and an average of 100 domains/s, it would be wise to roll-back _at least_ 6000 lines. This should be a last-resort option, and is mainly here to sanity-check long measurements. +### Misc notes + +We use the default `net.Dial` function, which in turn uses +[goLookupIPCNAMEOrder][] for DNS lookups with the recursive name servers in +`/etc/resolve.conf`. For example, with + + $ cat /etc/resolve.conf + nameserver 8.8.8.8 + nameserver 8.8.4.4 + +the query will first be directed to `8.8.8.8`; then `8.8.4.4` if no valid answer +is available yet ([lines 663-778][]). + +[goLookupIPCNAMEOrder]: https://github.com/golang/go/blob/8edcdddb23c6d3f786b465c43b49e8d9a0015082/src/net/dnsclient_unix.go#L595-L804 +[lines 663-778]: https://github.com/golang/go/blob/8edcdddb23c6d3f786b465c43b49e8d9a0015082/src/net/dnsclient_unix.go#L663-L778 ## Contact |