Netgraph VLANs on Hyper-V

[Reshad Patuck]

Hi Sami,

I the interfaces in the VNET jails are both epair interfaces with
auto-generated mac addresses in the 02:xx:xx:xx:xx:xx range.

When I use if_vlan I can connect to the IP address in the jail.
For ng_vlan I can not connect to the IP address in the jail.

I will test again using a mac address statically set to:
- mac address of hn1 interface
- mac address of hn1 + 1

I will drop my results here in a bit.

Thanks for your help.

Reshad

On Fri, 10 Apr, 2020, 16:40 Sami Halabi, <sodynet1 at gmail.com> wrote:

> Hi,
> If I recall correctly it has something to do with Mac addresses netgraph
> expose not recognized by Hyper-v and maybe other Hypetvisors.
>
> Myabe someone can shed more light on it.
>
> Sami
>
> בתאריך יום ו׳, 10 באפר׳ 2020, 10:07, מאת Reshad Patuck ‏<
> reshadpatuck1 at gmail.com>:
>
>> Hi,
>>
>> I am trying to use ng_vlan on Hyper-V to deploy vnet jails.
>> The "Enable MAC address Spoofing" setting on the Hyper-V host is enabled.
>> However when I try to use ng_vlan I am not able to reach the jail.
>> If I change this to if_vlan instead everything works fine.
>>
>> Is there something that creating a VLAN using ifconfig does that ng_vlan
>> does not.
>> The same setup works well on VMware ESXi, Xen and KVM.
>>
>> I am not sure if this is relevant to my issue but the hn1 devices sysrc's
>> changes when I use different vlan methods:
>>
>> no vlan:
>> dev.hn.1.rxfilter: 9<DIRECT,BROADCAST>
>> dev.hn.1.hwassist: 17<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO>
>>
>> if_vlan:
>> dev.hn.1.rxfilter: 20<PROMISC>
>> dev.hn.1.hwassist: 17<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO>
>>
>> ng_vlan:
>> dev.hn.1.rxfilter: 9<DIRECT,BROADCAST>
>> dev.hn.1.hwassist: 0
>>
>> All the other sysrc's either stay the same or seem to be counters.
>> I can provide you with scripts to setup vlans and jails with both if_vlan
>> and ng_vlan if that helps.
>>
>> Any help understanding what these sysrc's do, or on how I could get
>> ng_vlan
>> to work would be very appreciated.
>>
>> Best,
>>
>> Reshad
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>