Re: [Gumstix-users] osx Branch, No Network...

[Marc H. <ma...@mi...>]

"Kit Plummer" <kit...@gm...> writes:

>> Ok, I'm down to needed whatever provides the if-up.d if-down.d stuff.
>> Anyone have a pointer on the right package/kernel mod to provide that
>> stuff?

The ifupdown applet in busybox, which provides the ifup and ifdown
commands, invokes the scripts in if-up.d and if-down.d.

However, I recently learned that ifup invoked udhcpc with the -b flag,
which causes it to background itself immediately, instead of after the
lease is acquired.  This means if-up.d gets run before the dhcp lease
is acquired.  (I think if you use a static IP, then if-up.d should be
fine, but I have not tested this.)  If you want something to run when
a dhcp lease is established, you can add it to the end of the
renew|bound) case in /usr/share/udhcpc/default.script.  I'm running
ntpdate, ntpd, and some custom code from there, and happens at the
right time after boot.

                Marc