get/set ifconfig entries through by programmatically

[John E Hein]

bsenthil wrote at 01:46 +0530 on Jun  2, 2007:
 > Is it possible to get/set  ifconfig entries through by programmatically. 
 > If yes, please send me the code snippet ...
 > 
 > I am trying to get/set ipaddress by executing the command "ifconfig" .

- use SIOCAIFADDR ioctl; man netintro(4)
- see source code in /usr/src/sbin/ifconfig
- the hacky approach using system(3): system("ifconfig fxp0 1.2.3.4/24");

[cross-post to embedded at freebsd.org removed]