It's up to the author of the man page to include as much information as they see fit.
I'm on Debian and there is no ifcfg command. After checking a few other distros, I only found the man pages on Fedora (RedHat) and Slackware.
But the first line does say that it
briefly documents the command and it continues with
Quote:
This is a simplistic script replacing one option of ifconfig
|
Probably some of the other network man pages may help, try:
Or even try the ip-cref.dvi pages.