Donghui Wen wrote: Hi, I just did a "make buildworld" based on the document http://www.dragonflybsd.org/docs/upgrade-freebsd.cgi It compaints it could not find "struct notifymsglist" which is used in select.h. I tried to do a grep, but could not find the definition. Can anyone help? Make sure you have the latest net/netisr.h, rev 1.13, where notifymsglist is declared. Jeffrey