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On 10/09/2017 10:55 AM, jdd@dodin.org wrote:
Le 09/10/2017 à 16:29, Patrick Shanahan a écrit :
shouldn't the OP assign/reserve the machine an address in the router config?
I don't know for wifi (because authentication), but on a threaded network, a machine can run the IP it wants without advertising it, at least at start. It can even be on the dhcp reserved part, and the machine can work and go to internet. Of course the router know it as soon as traffic is made on the net.
of course if an other machine have the same IP, there are problems.
It depends also of the router to store (or not) the IP not covered by it's dhcp. simpler ones don't seems to care.
Actually, there's more to it than that. Duplicate Address Detection (DAD) is often used now, to see if an address is in use. Even without DAD, a device will often do a gratuitous ARP, to let other devices know it's on the network. It will also ARP requests to determine the MAC address for the gateway etc.. So, there are lots of things that "advertise" an IP address by an interface that's starting up, even when DHCP is not used. Fire up Wireshark and filter on ARP, to see what actually happens. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org