What have I neglected to do in order to get networking in a jail?

[James B. Byrne]

On Thu, May 31, 2018 04:55, Herbert J. Skuhra wrote:
> On Wed, 30 May 2018 17:24:03 +0200, "James B. Byrne via

>> root at mx31:~ # ifconfig
>> vtnet0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>
>> metric 0 mtu 1500
>>         options=80028<VLAN_MTU,JUMBO_MTU,LINKSTATE>
>>         ether 58:9c:fc:0e:cd:bb
>>         hwaddr 58:9c:fc:0e:cd:bb
>>         inet 218.185.71.31 netmask 0xffffffff broadcast 218.185.71.31
>>
>> Why does this jail not have a network connection?
>
> After a quick check I guess you are missing NAT on the host (pf or
> ipfw)?

One does not require NAT when one has a public IP address assigned to
the I/F.   The jail network traffic is not getting off the host system
as I have determined from tcpdump.

I have set jails up before on a similarly configured host and have
gotten them to work, albeit always with some difficulty or other.


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