ioctl(fd, SIOCGIFBRDADDR, (char *) ifr) supported?

[Jeffrey P. Zimmerman]

I'm trying to find the broadcast address of a socket using:

ioctl(fd, SIOCGIFBRDADDR, (char *) ifr);

SIOCGIFBRDADDR (and most other SIOxxx constants) are not defined in the
sockios.h header file.  Why is this?  Is this not supported?

Jeff Zimmerman
zimmermj@adstii.com

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