Kernel header changes break glibc build

[Thomas Graf]

* Stefan Rompf <stefan@loplof.de> 2006-12-06 20:32
> According to a user's report, your change also broke compilation of my 
> dhcpclient because it neeeds if_addr.h since 2.6.19. Any suggestion how to 
> make one source code build on 2.6.19 and older headers? I hope you don't want 
> me to check on UTS_RELEASE in a userspace program?

#ifndef IFA_MAX
#include <linux/if_addr.h>
#endif