How to disable domain broadcasts?
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I have a pfSense appliance that broadcasts domain changes on ICMPv6 (DNS Search List Option 31). This makes one of my windows machines receiving these broadcasts to take the DNS search list value and put it as a DNS suffix which I need to prevent. How can I stop the pfSense appliance from broadcasting this?
I have turned off DHCP completely in the appliance and still when I changed my domain in pfSense->General the appliance immediately sends a broadcast
is there a way to maybe add a firewall rule to block these? or some other option to turn these broadcasts off?
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If you block those multicasts (no such thing as a broadcast with IPv6), you will kill IPv6. However, there is a setting Provide DNS configuration via radvd, on the Router Advertisement page, that you can use to turn off RDNSS.
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@jknott, I have been looking for this for a few hours with little luck. Many, many thanks!
