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Date:      Sat, 15 Dec 2012 17:06:11 -0800
From:      Adrian Chadd <adrian@freebsd.org>
To:        Chris H <chris#@1command.com>
Cc:        Glen Barber <gjb@freebsd.org>, freebsd-net <freebsd-net@freebsd.org>
Subject:   Re: MAC cloning available like Linux has?
Message-ID:  <CAJ-Vmom1MHThukf_VjtFJJLGwTHmsWgT0uDVpW%2Bqs4xhyKYpAw@mail.gmail.com>
In-Reply-To: <476652410abd01eff09cf38132ebd0f6.authenticated@ultimatedns.net>
References:  <fbb9a110e10541ca977e38c0078b8cd4.authenticated@ultimatedns.net> <dcf4605249a8bff03454b85056c62ba4.authenticated@ultimatedns.net> <CA%2BtpaK2ooetDd%2BNE3WNbAQ_3_Kcxit8jvyVf4X9X2wxUc9R4Rg@mail.gmail.com> <22dff5a60850319d50ce4f1a07309562.authenticated@ultimatedns.net> <20121214230414.GF1959@glenbarber.us> <27119a9d879fd4fb124b517b1589d578.authenticated@ultimatedns.net> <20121215115343.GC1342@glenbarber.us> <31ed4a74f0e5c8f3156d725d86590379.authenticated@ultimatedns.net> <20121215181928.GC1344@glenbarber.us> <4206626b0eb77c1955c546d5cf91b4cc.authenticated@ultimatedns.net> <CAJ-VmonjhV2pzAJEXJoKj3mpGPZbXJWR=bKxN1Wp_7wF5jsZFA@mail.gmail.com> <09d1faaf95a2644e1819a042b65ca360.authenticated@ultimatedns.net> <476652410abd01eff09cf38132ebd0f6.authenticated@ultimatedns.net>

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Yes, please file a PR so that the documentation gets updated to reflect this.

You can't be the only person who wishes to do this.

As I said, I think it's worth extended rc.conf to have a specific
"ether" field for ifconfig, so any device-specific weird crap
(especially when creating cloned devices) can be done at the right
point before the interface is brought up.

Thanks,



Adrian


On 15 December 2012 14:11, Chris H <chris#@1command.com> wrote:
>>> Hi,
>>>
>>> Please file a PR for this. I think this (and mac address
>> Greetings Adrian, and thank you for your reply.
>>
>>> setup/changing on net80211, similar issues) needs both some better
>>> documentation/FAQ entries and updates to the rc scripts.
>>>
>>> I think we may want to add an ifconfig_X_ether="" to set the L2
>>> address appropriately for an interface.
>>>
>>> Thanks,
>>>
>>>
>>>
>>> Adrian
>>
>> Well, on a hunch regarding RC(8), I blew 9.0 off the drive, and
>> experimented with installing 8.2. But I think I stumbled onto
>> something. I don't know (yet) if this will carry over to 9.x yet.
>> But here's what I discovered:
>>
>> in rc.conf, adding the following (order is important!), everything
>> works as expected/desired/anticipated;
>>
>> --- begin rc,conf --------------------------------------------------------------
>> ifconfig_ue0="ether ##:##:##:##:##:##"
>>
>> ifconfig_ue0_alias0="DHCP"
>>
>> *** or ***
>>
>> ifconfig_ue0_alias0="inet ip4.add.ress.anticipated netmask kno.wn.net.mask"
>>
>> followed by
>> defaultrouter="kno.wn.gate.way" --applies for static only
>> --- end rc,conf --------------------------------------------------------------
>>
>> So. It appears this will be the answer. _However_ I can't swear to it
>> until I spin up && install a (fresh) copy of RELENG_9.
>> I'll do so, and report back.
>>
>> Thanks again, for your reply.
>>
>> --Chris
>
> OK. The results are in --
> Using the RC(8) declarations I listed above work not only in RELENG_8,
> but also in RELENG_9. I just performed an install from the 9.0 CD I
> downloaded from freebsd.org on 12-12-14. Everything (both as STATIC,
> and as DHCP) worked as expected/anticipated.
>
> Is this still worth a PR(1)?
>
> Best wishes, and thanks again, to everyone that took the time to help!
>
> --Chris
>
>>
>>
>>
>>>
>>> On 15 December 2012 10:36, Chris H <chris#@1command.com> wrote:
>>>>> On Sat, Dec 15, 2012 at 10:11:41AM -0800, Chris H wrote:
>>>>>> Hello Glen, and thank you for your reply.
>>>>>> > On Fri, Dec 14, 2012 at 11:26:06PM -0800, Chris H wrote:
>>>>>> >> ifconfig_ue0="DHCP"
>>>>>> >> create_args_ue0="ether ##:##:##:##:##:##"
>>>>>> >> create_args is simply ignored.
>>>>>> >>
>>>>>> >
>>>>>> > Ignored how?  What commands are you running to verify it works?
>>>>>> > For me, create_args_IFNAME works fine on my firewall.
>>>>>>
>>>>>> Unfortunately, it had no affect for me.
>>>>>> The ue0 maintained the same MAC it started with.
>>>>>> Out of desperation, I even tried it in /boot/loader.conf.
>>>>>
>>>>> It is not a loader(8) tunable, it is part of the rc(8) system.
>>>>>
>>>>> You did not answer the important part of what I asked - how are you
>>>>> testing?  Are you rebooting the machine?  Are you using the netif rc
>>>>> script?
>>>>
>>>> Ahh. Sorry, my bad. Rebooting.
>>>>
>>>> I have no difficulty issuing:
>>>> ifconfig ue0 down
>>>> ifconfig ue0 ether ##:##:##:##:##:##
>>>> dhclient ue0
>>>>
>>>> This method will always return the expected/desired results.
>>>>
>>>>>
>>>>> Glen
>>>>>
>>>>>
>>>> Thanks for the reply.
>>>>
>>>> --Chris
>>>>
>>>>
>>>> _______________________________________________
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>>>
>>
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>



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