[erlang-bugs] inet:getifaddrs always returns running

[Raimo Niskanen]

On Fri, Feb 14, 2014 at 12:16:05PM -0600, Anders Nygren wrote:
> I am not sure if this is a bug, or if I misunderstand something.
> 
> On at least R15B01 and R16B03-1 on Linux, inet:getifaddrs always returns
> RUNNING in the flags even if the network cable is disconnected, and
> ifconfig does not show RUNNING.

This seems to be an old (pre-R13) workaround of unknown origin that
emulates RUNNING when UP, so the real IFF_RUNNING flag is ignored.

I consider it a bug, and if IFF_RUNNING is not working or not present
on some platform, that should be worked around instead of working
around a working normal case.

It is now on our interna ToDo list but without priority yet.

> 
> Is there any other way of getting the operational state of an interface?
> 
> /Anders

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-- 

/ Raimo Niskanen, Erlang/OTP, Ericsson AB