This script assign static IP to all nodes of a kind cluster

kind_static_ips.sh

#!/bin/bash
set -e

# Workaround for https://github.com/kubernetes-sigs/kind/issues/2045
all_nodes=$(kind get nodes --name "${CLUSTER_NAME}" | tr "\n" " ")
declare -A nodes_table
ip_template="{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}"

echo "Saving original IPs from nodes"

for node in ${all_nodes}; do
  nodes_table["${node}"]=$(docker inspect -f "${ip_template}" "${node}")
  echo "${node}: ${nodes_table["${node}"]}"
done

echo "Stopping all nodes and registry"
docker stop ${all_nodes} "${reg_name}" >/dev/null

echo "Re-creating network with user defined subnet"
subnet=$(docker network inspect -f "{{(index .IPAM.Config 0).Subnet}}" "kind")
echo "Subnet: ${subnet}"
gateway=$(docker network inspect -f "{{(index .IPAM.Config 0).Gateway}}" "kind")
echo "Gateway: ${gateway}"
docker network rm "kind" >/dev/null
docker network create --driver bridge --subnet ${subnet} --gateway ${gateway} "kind" >/dev/null

echo "Assigning static IPs to nodes"
for node in "${!nodes_table[@]}"; do
  docker network connect --ip ${nodes_table["${node}"]} "kind" "${node}"
  echo "Assigning IP ${nodes_table["${node}"]} to node ${node}"
done

echo "Starting all nodes and registry"
docker start ${all_nodes} "${reg_name}" >/dev/null

echo -n "Wait until all nodes are ready "

while :; do
  [[ $(kubectl get nodes | grep Ready | wc -l) -eq ${#nodes_table[@]} ]] && break
  echo -n "."
  sleep 5
done

echo

Yes, you are right.