net_if_addr should return interface index

[kochelmonster]

Some socket options (e.g. IPV6_MULTICAST_IF) need the interface index. In the current implementation of net_if_addr this information get lost. Please either add an "ifn" field to the snicaddr tuple or return an OrderedDict with the orignal iface order.

[giampaolo]

What's that? What's the use case? Does ifconfig report it?

[kochelmonster]

socket.IPV6_JOIN_GROUP needs the interface index.

[Gracecr]

@kochelmonster did you find a way to get the interface index? The interface names returned by psutil don't match socket.if_nameindex for me on Windows.

It's included in the table psutil queries for interface info on Windows, but I'm not sure if that's true for other operating systems.