Unbound DNS unable to forward overidden domain via VPN

[SparcV]

I have an issue I'm trying to work through.  I have the Unbound DNS service configured with a domain override to forward the DNS requests to a server (10.0.0.20) that is on the other side of a IPSec tunnel, but any requests for that domain are never sent across the VPN. Instead I can see that its trying to connect to the IP of the DNS server (10.0.0.20) that should be on the other side of the VPN, but its just going out the WAN via the default gateway. 

How do I force Unbound DNS to send that traffic over the VPN?

The routes are working for all other traffic originating from the Local LAN destine to the VPN's

Code Select Expand

  <unbound>
    <enable>1</enable>
    <custom_options/>
    <regdhcp>1</regdhcp>
    <regdhcpstatic>1</regdhcpstatic>
    <active_interface/>
    <outgoing_interface/>
    <domainoverrides>
      <domain>work.local</domain>
      <ip>10.0.0.20</ip>
      <descr/>
    </domainoverrides>
    <cache_max_ttl/>
    <cache_min_ttl/>
    <incoming_num_tcp>10</incoming_num_tcp>
    <infra_cache_numhosts>10000</infra_cache_numhosts>
    <infra_host_ttl>900</infra_host_ttl>
    <jostle_timeout>200</jostle_timeout>
    <log_verbosity>2</log_verbosity>
    <msgcachesize>4</msgcachesize>
    <num_queries_per_thread>4096</num_queries_per_thread>
    <outgoing_num_tcp>10</outgoing_num_tcp>
    <unwanted_reply_threshold/>
  </unbound>

OPNsense 18.7.10-amd64

[SparcV]

I found the answer in another post:

https://forum.opnsense.org/index.php?topic=6750.0