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To: Devin Teske <dteske@freebsd.org>
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Cc: Ron McDowell <rcm@fuzzwad.org>, Freebsd-stable@freebsd.org
Subject: Re: [CFT] Need Testers for: sysutils/bsdconfig
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22.06.2012 15:39, Devin Teske wrote:

>>>> 5. Same for vlan16. For vlan9 is shows right 'IEEE 802.1Q VLAN network interface'.
>>>> It should work same way for vlan1-vlan4095 interfaces at least.
>>>>
>>>
>>> I'd like to know if the sysctl MIB's for describing network interfaces is reliable. Maybe I'll keep the static list as a fallback. But yes, you're absolutely right -- I should have supported up to 5 digits even (ifconfig has internal limits of 16-bit unsigned integer for the interface instance-number).
>>>
>>>
>>>> 6. Same for ipfw0 pseudo-interface.
>>>>
>>>
>>> Curious what sysctl says about it.
>>
>> I do not know what sysctl subtree do you refer to.
>>
> 
> If you're using em(4) device, try:
> 
> sysctl dev.em.0.%desc
> 
> Otherwise (for example), if using fxp(4), try:
> 
> sysctl dev.fxp.0.%desc
> 
> Or for your vlan:
> 
> sysctl dev.vlan.16.%desc
> 
> And try for your ipfw(4) interface:
> 
> sysctl dev.ipfw.0.%desc
> 
> Are each of those meaningful?
> 
> NOTE: They aren't available unless you have the hardware -- so I can't (for example) try "sysctl dev.fxp.0.%desc" unless I have an fxp0 device displayed in ifconfig(8).

That's driver-dependent. For example, lagg does not presents %desc nor ipfw0
and I suppose pretty many others do not. You could use %desc if it's present and
fall back to internal static list otherwise.