Thanks, I'll take a look at ifplugd. More specifically, I want to use ntp to sync up the clock when the network becomes available. It looks like ifplugd allows me to specify my own actions. I'll have to look if what it takes to add ifplugd to my environment. Aside from that, is there a way to do this using only udev? Thanks, -James > -----Original Message----- > From: Bob Beers [mailto:bob.beers@xxxxxxxxx] > Sent: Wednesday, October 21, 2009 11:04 AM > To: James Cheng > Cc: linux-hotplug@xxxxxxxxxxxxxxx > Subject: Re: Run a program when > > On Wed, Oct 21, 2009 at 12:49 PM, James Cheng <jcheng@xxxxxxxx> wrote: > > Hi, > > > > I am on an embedded system. I'd like to receive notification of when > a network interface has become available. This is to handle the case > when the system is booted up without any network plugged in, and then > someone plugs in a network at some point later. Ideally, I'd like to be > notified when the interface actually receives a DHCP address, but if > that's not possible, then a notification on the network being plugged > in would work as well. > > > > Have you looked at ifplugd? It notices link up and down and will > configure and de-configure the interface. > > > Can udev help me with this? Can I write a rule that runs some sort of > program when this happens? I saw references on the mailing list to > ethtool or some other things, but I wasn't sure what the latest status > was. > > > > Thanks! > > -James > > > > HTH, > -Bob -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
