netstat(1) -s -f is broken

[Sean Bruno]

On 05/03/18 15:32, Dieter BSD wrote:
> FreeBSD 10.3-RELEASE
> 
> The fine man page promises:
>      netstat -i | -I interface -s [-46] [-f protocol_family | -p protocol]
>              [-M core] [-N system]
>              Display per-interface statistics for each network protocol, for a
>              particular protocol_family, or for a single protocol.
> 
> But in reality,
> netstat -I interface -s -f family
> only works if family is inet6.
> 
> interface=lo0
> for fam in inet inet6 pfkey atalk netgraph ipx unix link
> do
>         echo -n interface = $interface  fam = $fam
>         netstat -I $interface -s -f $fam | wc
> done
> 
> interface = lo0 fam = inet       0       0       0
> interface = lo0 fam = inet6      56     258    1728
> interface = lo0 fam = pfkey       0       0       0
> interface = lo0 fam = atalk       0       0       0
> interface = lo0 fam = netgraph       0       0       0
> interface = lo0 fam = ipx       0       0       0
> interface = lo0 fam = unix       0       0       0
> interface = lo0 fam = link       0       0       0
> 
> I had this in a loop with all the interfaces, the results are
> the same for all interfaces.
> 
> Doesn't work with -p either.
> netstat -I lo0 -s -p udp
> :udp: no per-interface stats routine
> 
> It would be very useful if this actually worked.
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> 



Wow, this sure looks like a bug.

sean

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