Description of problem:
On a IPv4 environment, discovery agent

Version-Release number of selected component (if applicable):
"release_tag":"v1.0.24.2",
"versions":{
"assisted-installer":"registry-proxy.engineering.redhat.com/rh-osbs/openshift4-assisted-installer-rhel8:v1.0.0-81",
"assisted-installer-controller":"registry-proxy.engineering.redhat.com/rh-osbs/openshift4-assisted-installer-reporter-rhel8:v1.0.0-82",
"assisted-installer-service":"quay.io/app-sre/assisted-service:7c32a07","discovery-agent":"registry-proxy.engineering.redhat.com/rh-osbs/openshift4-assisted-installer-agent-rhel8:v1.0.0-54"

How reproducible:

Steps to Reproduce:
1. Create a cluster and boot up the nodes
2. Wait 30-40 minutes without starting the installation
3. Check the dmesg on the nodes

Actual results:
All nodes have messaged related to IPv6 api/ingress duplicate address.
Same ipv6 address/ mac address is on all the nodes.

[ 5780.807469] IPv6: api: IPv6 duplicate address fe80::21a:4aff:fe9e:5045 used by 00:1a:4a:9e:50:45 detected!
[ 6326.810152] IPv6: ingress: IPv6 duplicate address fe80::21a:4aff:fec7:ae99 used by 00:1a:4a:c7:ae:99 detected!

Expected results:
no duplicate address messages

Additional info:
Attached is the output of ip a and last 10 lines of dmesg from all the nodes