On Tue, Apr 28, 2020 at 12:18:38PM +0200, David Balažic wrote: > On Tue, 28 Apr 2020 at 01:34, David Balažic <xerces9@xxxxxxxxx> wrote: > > > > On Fri, 24 Apr 2020 at 17:55, Guillaume Nault <gnault@xxxxxxxxxx> wrote: > > > You can monitor the evolution of you network devices with rtmon: > > > $ rtmon file ./some/file.log link > > > > > > Then read it with ip monitor: > > > $ ip monitor file ./some/file.log > > > > > > That should tell if eth1.3902 is ever passed down or even deleted. > > > > rtmon does not seem to be available on openwrt. It is part of iproute2, right? > > > > Are there any alternatives? > > (until I find or compile it myself...) > Sorry for late reply. Yes, rtmon is part of iproute2. > OK, I found 'ip', but not 'rtmon'. > > Is running 'ip monitor link' equivalent? > I'll start that... > Yes. Both listen to the kernel netlink messages that are sent when network interfaces are modified. > Regards, > David >