Cloning VLAN interfaces

[rozhuk.im at gmail.com]

#!/bin/sh

ngctl shutdown re0:lower
ngctl shutdown re0:upper

ngctl mkpeer re0: hub lower lower
ngctl name re0:lower re0-hub
ngctl connect re0: re0-hub: upper upper

ngctl mkpeer re0-hub: vlan downstream downstream
ngctl name re0-hub: downstream re0-vlan
ngctl mkpeer re0-vlan: eiface vlan10 ether
ngctl msg re0-vlan: addfilter '{ vlan=10 hook="vlan10" }'


> -----Original Message-----
> From: owner-freebsd-net at freebsd.org [mailto:owner-freebsd-
> net at freebsd.org] On Behalf Of jammin2night
> Sent: Tuesday, March 20, 2012 1:11 AM
> To: freebsd-net at freebsd.org
> Subject: Cloning VLAN interfaces
> 
> FreeBSD charon 9.0-STABLE FreeBSD 9.0-STABLE #14 r233107: Sun Mar 18
> 05:26:58 EDT 2012     root at charon:/usr/obj/usr/src/sys/CHARON  amd64
> 
> Hello:
> 
> I have a machine that has a 802.1q trunk attached which works fine.  I
> can create VLAN interfaces, apply an IP address to them and all is
> good.
> 
> I have VirtualBox running on this machine and need to present an
> interface to a VM that does not support trunking natively.  I've
> googled and searched the archive trying to figure out how to create an
> interface that VirtualBox will use where the 802.1Q tags are removed
> but have not had any success.
> 
> I attempted to create a netgraph interface like:
> 
> #!/bin/sh
> 
> ngctl shutdown re0:
> ngctl mkpeer re0: vlan lower downstream
> ngctl name re0:lower vlan
> ngctl connect re0: vlan: upper upstream
> ngctl mkpeer vlan: eiface vlan10 ether
> ngctl msg vlan: addfilter '{ vlan=10 hook="vlan10" }'
> 
> but this nuked my VLAN10 interface.  Using tcpdump I saw no traffic on
> interface VLAN10 or interface ngeth0. I probably going about this all
> wrong or just don't get the netgraph hooks.
> 
> If there is an example as to how to this this I just missed it.
> 
> Any pointers on how to accomplish this?
> 
> Thanks.
> 
> 
> 
> 
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