[Xorp-hackers] Patch for a netlink problem: Can't set MAC address

[Rick Balocca]

In fea/ifconfig_set_netlink.cc , there is code that attempts to set interface MAC addresses.  This code fails to work correctly because the netlink payload that it sends is a simple MAC address.  The kernel code is looking for a struct sockaddr.

One odd-ball thing is that the payload length (rta_len) must be truncated.  It must be set to the sizeof sa_family+mac_address_length rather than the larger, and more correct, sizeof sockaddr .
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