How di I reinitialize eth0 on resume from suspend?

[insomniac]

I have a laptop connected to a LAN (dhcp) and every time i resume from suspend, I have to wait about 15 minutes before dhcpcd rediscovers the dhcp address. I'd like to have a script which automatically shuts down eth0 on suspend, and restarts it at resume.
eth0 is started and stopped via /etc/init.d/net.eth0 but where do I put the script to have it shut down on suspend (/etc/init.d/net.eth0 stop) and start on resume???
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My next computer is also a Gentoo computer

[clacour]

This applies to apmd -- I can't speak on the subject of acpi.

Do a "ps -ef | grep apm". If all you see is "kapmd", then you're not running the apmd program, which you have to have to make this fly.

Use "/etc/init.d/apmd start" to start it.
Say "rc-update add apmd default" to turn it on permanently.

All the stuff that controls what apmd does is in /etc/apm. Rather than cover all the various ways it can be done, I'll just describe how I did it:

Create a script in "/etc/apm/event.d". (I called mine "events", but any script(s) in that directory will be executed).

The script will be passed two parameters. See /etc/apm/apmd_proxy for the list of possible values.

I only cared about two: "suspend" and "resume", and I didn't really care why it suspended or resumed, just that it did.

In pseudocode, here's what mine does:

if "suspend"
/etc/init.d/net.eth0 stop
cardctl eject 0
fi

if "resume"
cardctl insert 0
/etc/init.d/net.eth0 start
fi

I need the cardctl stuff because there's something squirrelly with either my card or the driver. I used to have a 10mbit-only card that came up with no grief at all. I wouldn't put in the "cardctl" stuff unless you find you need it.

Hope this helps,

CHL