pfSense

You can just modify the default config.xml in the repository and that will give you that.
I do not think this will get any priority in pfSense builder scripts itself before 2.1 gets released.

locally I could do it. True. The point is that I'm trying daily to download a snapshot from your snapshot server, run it in a vm and run some cucumber acceptance tests on that to see if everything still working. So it would great to have it available on snapshot.pfsense.org.

Hrm seems it should work by default as i was brought to attention.
You sure it asks for interface assignment during bootup?

It seems everything is there to not make this happen.
The only reason it can happen is that you do not have a 'VM Network' defined on your virtual network lists.

'VM Network' usually is the default one you get.
This is the default config for network.

      <Item>
        <rasd:AddressOnParent>7</rasd:AddressOnParent>
        <rasd:AutomaticAllocation>true</rasd:AutomaticAllocation>
        <rasd:Connection>VM Network</rasd:Connection>
        <rasd:Description>E1000 ethernet adapter on &quot;VM Network&quot;</rasd:Description>
        <rasd:ElementName>ethernet0</rasd:ElementName>
        <rasd:InstanceID>6</rasd:InstanceID>
        <rasd:ResourceSubType>E1000</rasd:ResourceSubType>
        <rasd:ResourceType>10</rasd:ResourceType>
      </Item>
      <Item>
        <rasd:AddressOnParent>8</rasd:AddressOnParent>
        <rasd:AutomaticAllocation>true</rasd:AutomaticAllocation>
        <rasd:Connection>VM Network</rasd:Connection>
        <rasd:Description>E1000 ethernet adapter on &quot;VM Network&quot;</rasd:Description>
        <rasd:ElementName>ethernet0</rasd:ElementName>
        <rasd:InstanceID>7</rasd:InstanceID>
        <rasd:ResourceSubType>E1000</rasd:ResourceSubType>
        <rasd:ResourceType>10</rasd:ResourceType>
      </Item>