bind9 forwarder query

[Sonal Pahuja]

Hi All,

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.

Please share your insights.

zone "e164.arpa" IN {
type forward ;
forwarders { 127.0.0.1 port 49153;   199.165.4.21 port 49153; };
forward only;
};

Regards,
Sonal
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