Re: Obtaining interface IP address and MAC address

[roy hills <royhills () hotmail com>]

> The interfaces used to do both of the above are almost universal now: 
> SIOCGIFADDR and SIOCGIFHWADDR.

I don't think SIOCGIFHWADDR is supported on MacOS or Windows.

For MacOS and other BSD operating systems, I use sysctl with the MIB { CTL_NET, PF_ROUTE, 0, AF_LINK, NET_RT_IFLIST, 0 
} and loop through the interfaces in the list until I find the one that I am using.

This works fine, but I'd rather not have to maintain my own system-specific link functions together with the autoconf 
logic to select the correct one for the target OS.

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