Re: How to let NM prompt duplicate ip address?
- From: Dan Williams <dcbw redhat com>
- To: José Queiroz <zekkerj gmail com>
- Cc: networkmanager-list gnome org
- Subject: Re: How to let NM prompt duplicate ip address?
- Date: Tue, 19 Jan 2010 20:00:17 -0800
On Tue, 2010-01-19 at 12:16 -0200, José Queiroz wrote:
> Some systems fire an arp request on the new IP address prior
> activating it, if there is an answer, it's sure that the address is a
> But the inverse isn't true: if the station with the duplicated address
> isn't operational in the moment you test it (e.g. powered down), the
> test will fail, and NM will incorrectly assume that the address is
Yeah, even if NM did some ARPs if the device wasn't around we wouldn't
get the initial notification. But I'd imagine that we could simply open
up a socket on the device and listen for ARP replies, and if we get hear
a reply that's not from us then we do something interesting with it.
> Maybe another daemon (e.g. AVAHI) could monitor for "gratuitous ARPs"
> and syslog the duplicates.
Probably not really a job for avahi since it's dealing more with
link-local and service discovery; I'd imagine NM itself is a better fit.
> 2010/1/19 Bin Li <libin charles gmail com>:
> > Hi,
> > When assigning a static ip address by NM, and this ip addresses
> > already be in use.
> > The NM don't prompt any information, I use the openSUSE 11.2.
> > Any idea?
> > Thanks!
> > Sincerely Yours,
> > Bin Li
> > http://cn.opensuse.org
> > _______________________________________________
> > NetworkManager-list mailing list
> > NetworkManager-list gnome org
> > http://mail.gnome.org/mailman/listinfo/networkmanager-list
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