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Date:      Tue, 14 Feb 2017 14:13:53 +0100
From:      Giulio Ferro <auryn@zirakzigil.org>
To:        "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject:   Re: Duplicate MAC addresses in VNET epair interaces
Message-ID:  <afbfd5b6-0cf6-5ad5-107e-752bd77b15f4@zirakzigil.org>
In-Reply-To: <88F0318C-ADB5-4EC3-9308-613ED7F2DAA7@lists.zabbadoz.net>
References:  <472069af-0f9d-d830-064b-2d984a5774ae@zirakzigil.org> <8B1A6A6C-4280-4B96-9D60-FC9E7EEE2222@lists.zabbadoz.net> <afe0bb6d-135c-0ce9-d344-3d83144ff56e@zirakzigil.org> <88F0318C-ADB5-4EC3-9308-613ED7F2DAA7@lists.zabbadoz.net>

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On 14/02/2017 13:51, Bjoern A. Zeeb wrote:
> ifconfig epair0b ether ether 02:ff:e0:00:00:0b
>> ifconfig: can't set link-level netmask or broadcast
>
> Two “ether”s there but I assume that’s a copy and paste issue?
>


No, it's just me being stupid and careless... ;)

Ok, it works great both in the jail and in the host.
I've put the ether address in the /etc/start_if.epairxx files, as I 
think it should be supposed to be.

Thanks a lot for your support!

Giulio.

>
>>
>> I've tried manually, in the rc.conf file 
>> (ifconfig_epair0b="ether..."), and in the /etc/start_if.epair0b file,
>> but neither of these three ways actually work to set the mac address 
>> of the epair interface within the jail.
>>
>> On the other hand, no problem setting the mac of epair in the host...
>
> And that’s what you should do.  Despite epairs being virtual 
> interfaces, think of them as hardware that you are only “loaning” to 
> the vnet-jail but don’t want the jail to mess with all the hw settings.
>
> And you probably want to change the ether addresses on both ends anyway.
>
> /bz
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