On 10/21/09, James Cheng <jcheng@xxxxxxxx> wrote: > 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. The current status is no, the kernel does not emit CHANGE uevents when the link status changes. -- 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
