portainer/app/components/createNetwork/createNetwork.html

<div id="create-network-modal" class="modal fade">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true"><i class="fa fa-times" aria-hidden="true"></i></button>
        <h3>Create network</h3>
      </div>
      <div class="modal-body">
        <form novalidate role="form" name="createNetworkForm">
          <div class="form-group">
            <label>Name:</label>
            <input type="text" placeholder='my_network'
            ng-model="createNetworkConfig.Name" class="form-control"/>
          </div>
          <div class="form-group">
            <label>Driver:</label>
            <input type="text" placeholder='bridge'
            ng-model="createNetworkConfig.Driver" class="form-control"/>
          </div>
          <div class="form-group">
            <label>Subnet:</label>
            <input type="text" placeholder='172.20.0.0/16'
            ng-model="createNetworkConfig.IPAM.Config[0].Subnet" class="form-control"/>
          </div>
          <div class="form-group">
            <label>IPRange:</label>
            <input type="text" placeholder='172.20.10.0/24'
            ng-model="createNetworkConfig.IPAM.Config[0].IPRange" class="form-control"/>
          </div>
          <div class="form-group">
            <label>Gateway:</label>
            <input type="text" placeholder='172.20.10.11'
            ng-model="createNetworkConfig.IPAM.Config[0].Gateway" class="form-control"/>
          </div>
        </form>
      </div>
      <div class="alert alert-error" id="error-message" style="display:none">
        {{ error }}
      </div>
      <div class="modal-footer">
        <a href="" class="btn btn-primary" ng-click="createNetwork(createNetworkConfig)">Create</a>
      </div>
    </div>
  </div>
</div>