tap(4) and host-only networking between host and guest

[John Nielsen]

On Nov 4, 2015, at 11:45 AM, Victor Sudakov <vas at mpeks.tomsk.su> wrote:

> Victor Sudakov wrote:
>> Julian Elischer wrote:
>>>> 
>>>> I am experimenting with bhyve which uses tap(4) for network access.
>>>> 
>>>> I don't want to bridge tap0 with any of the hosts's real NICs. How can
>>>> I create a private network just between the host and the guest?
>>> you are thinking too hard!
>>> 
>>> tap IS the interface..
>>> 
>>> ifconfig tap0 $address...
>>> and in the VM, ifconfig vtnet0 ${some_other_address}
>> 
>> Thank you, Julian! It works. I felt I was missing something obvious. 
> 
> For some reason, after a guest is shutdown or rebooted, the IP address
> on the host's tap0 interface is deleted.
> 
> It's kind of inconvenient. 

What I have done in this scenario is create a bridge interface, assign the host’s IP to the bridge, and add the tap as a member to the bridge.