Steve - Thanks for the pointer to RTNETLINK. I understand how to use IFLA_ADDRESS and RTNETLINK to obtain the hardware address of an interface. ioctl SIOCGIFHWADDR also seem to work fine, but the interface isn't getting returned by ioctl SIOCGIFCONF and I don't see how to use RTNETLINK to return a list of all interfaces. Am I missing something? Someone suggested parsing /proc/net/dev but I'd rather not do that. Marc - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
