[Discuss] System receiving incorrect IP address

[gaf.linux at gmail.com (Jerry Feldman)]

IP addresses are assigned by DHCP. The DHCP server, your gateway will try
to send you the same ip address based on your Mac address. One solution is
to plug the xat5 cable into the other port on the computer as it will have
a different Mac address. In general, your Mac address is gard wired into
your network interface.

Another solution is a factory reset of your gateway.

--
Jerry Feldman <gaf.linux at gmail.com>
Boston Linux and Unix http://www.blu.org
PGP key id: 6F6BB6E7
PGP Key fingerprint: 0EDC 2FF5 53A6 8EED 84D1  3050 5715 B88D 6F6
B B6E7

On Mon, Oct 12, 2020, 4:11 PM <epp at mcom.com> wrote:

> Next problem...  :(
>
> The other desktop (I'll call it Desktop 2.) is not receiving the correct
> IP address. It, along with Desktop 1 were connected to a T-Mobile/ASUS
> router that was being used as a switch. Desktop 1 and WiFi-connected
> phone, correctly went through the router/switch and received an IP
> address from the gateway.
>
> Note that both desktops are now connected directly to the gateway,
> with all equipment having been power-cycled.
>
> Desktop 1 continues to receive the IP from the gateway, yet Desktop 2's
> network connection information continues to display an IPv4 address that
> would have been assigned from the router, had it been used as a router,
> but is apparently displaying an IPv6 address from the gateway. The
> router's IPv4 address was set to use a different subnet and when I set
> it up to use it as a switch, it's DHCP was turned off.
>
> Where Desktop 2 is now connected directly to the gateway, it should
> receive an IP from that and it's not. Yet, in the gateway, rather than
> it displaying the hostname of the desktop, it displayed its MAC address
> instead.
>
> Is there a way of releasing/deleting the IP address(es) stored on
> Desktop 2, so I can get a working IP? (Fedora Linux)
>
> What I have tried so far, without success:
>
> * dhclient -r
> * ip addr flush dev <device name>
> * dhclient <device name>
> * assigned an IP address in the gateway
> * repeated reboots of system
>
> Thanks in advance.
>
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