I used this to install on RHEL 7
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systemctl disable NetworkManager
systemctl stop NetworkManager
systemctl disable firewalld
systemctl stop firewalld
setenforce 0

systemctl restart network
systemctl status network
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subscription-manager list --available

subscription-manager attach --pool=

subscription-manager repos --enable=rhel-7-server-optional-rpms \
  --enable=rhel-7-server-extras-rpms --enable=rhel-7-server-rh-common-rpms
subscription-manager repos --enable=rhel-7-server-openstack-14-rpms
subscription-manager repos --enable=rhel-7-server-openstack-14-devtools-rpms
subscription-manager repos --enable=rhel-7-server-openstack-14-tools-rpms

yum repolist enabled #enable all

subscriptiion-manager repos --enable=

yum install -y yum-plugin-priorities yum-utils

yum install openstack-selinux

rpm -q --whatprovides rubygem-json   ###### rubygem-json-1.7.7-20.el7.x86_64

yum install -y openstack-packstack
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I used this command to create external network:
neutron net-create External1 --provider:network_type flat --provider:physical_network br-ex --router:external=true --shared
neutron net-create External2 --provider-physical-network provider --provider:physical_network eno16777736 --router:external=true --shared
openstack subnet create --network provider \
  --allocation-pool start=192.168.43.1,end=192.168.43.240 \
  --dns-nameserver 192.168.43.1 --gateway 192.168.43.1 \
  --subnet-range 192.168.43.0/24 provider
I tried the three external networks separately
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I created the routers and subnets on Horizon

my external network is 192.168.43.0/24 my IP is 192.168.43.77 I used for installing openstack packstack with answer file and https enabled

I also used this solution and configured br-ex on my network for openstack also configuered related neutron .ini and plugins .ini files

I also used this solution:
mysql
  > create database neutron;
  > grant all privileges on neutron.* to 'neutron'@'localhost' identified by 'server';
  > grant all privileges on neutron.* to 'neutron'@'%' identified by 'server';
  > quit

export | grep OS_declare -x OS_AUTH_URL="https://192.168.43.77:5000/v3"

source admin-openrc.sh
openstack user create --domain default --password-prompt neutron
openstack role add --project service --user neutron admin
openstack service create --name neutron --description "OpenStack Networking" network
openstack endpoint create --region RegionOne network public http://controller:9696
openstack endpoint create --region RegionOne network internal http://controller:9696
openstack endpoint create --region RegionOne network admin http://controller:9696

systemctl enable neutron-server.service neutron-openvswitch-agent.service neutron-dhcp-agent.service neutron-metadata-agent.service neutron-ovs-cleanup.service
systemctl start neutron-server.service neutron-openvswitch-agent.service neutron-dhcp-agent.service neutron-metadata-agent.service neutron-ovs-cleanup.service

I know that openvswitch is the 10.0 installation on my RHEL 7 VM and Openstack repos of 14 trial version but the installed is 13 (rocky)

I have been looking for this solution since yesterday, and I didn't sleep, help please