Ubuntu 24.04 and DHCP question

[Jerry Geis]

I am installing 24.04 on a computer - using DHCP
I get TWO DHCP addresses on same NIC enp3s0
192.168.2.189 - which is valid
and then also 192.168.10.136 - which is not valid

my config is below I added the 192.168.10.0 range to try and DENY it on the
network.

Why is Ubuntu 24.04 getting this address? I dont recall it on 22.04.
The linux offering DHCP is 24.04 and the machine asking for DHCP is also
24.04. It fails install then because the 192.168.10.X network is the
default route and is totally not valid.

Thanks

Jerry

----
# dhcpd.conf
#
# Configuration file for ISC dhcpd (see 'man dhcpd.conf')
#

authoritative;

option domain-name-servers 8.8.8.8;
option tftp-server-name "192.168.1.8";
option ntp-servers 17.151.16.20;
option routers 192.168.1.1;

default-lease-time 86400;

ddns-update-style none;

subnet 192.168.0.0 netmask 255.255.252.0 {
range 192.168.2.1 192.168.2.254;
}

# Block or 24.04
subnet 192.168.10.0 netmask 255.255.255.0 {
range  192.168.10.1 192.168.10.254;
deny unknown-clients;
}
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