bind9 forwarder query

[Matus UHLAR - fantomas]

On 23.09.21 06:18, Sonal Pahuja wrote:
>We have configured a forward zone in bind9  for e164.arpa and in forwarders we are giving 2 IPs.
>Just wanted to know the mechanism/routing/ Load balancing policy by which bind9 forwarding to different IPs.


>I can see sometimes it routes to same IP always, sometime it forward it in round robin way.

bind keeps track of servers that responds fastest and periodically rechecks
the rest.
it's called SRTT algorithm, web search should give some explanations.
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