Fail to assign staticip along with portmapping to container using docker-py

Hi,

I have issue and could not find solution regarding this
Use case:
Trying to assign a static ip from a network to a container and same ip has to be used for portmapping to host network
I am able to achieve this from binary but not from docker.py library

      docker run -it --name container --net radio --ip 172.21.0.20  -p 192.168.0.13:5554:5554/udp  imagename

in code I am creating container

              key=("%s/%s" % (self.port,self.protocol))
              cportmapping = { key  : (self.ip, self.port)}   # {  '5554/udp' : (192.168.0.13,5554)}
              argd['ports']=self.cportmapping
              argd['network'] = self.cnetwork  (network = radio)
              container=self.client.containers.create(self.cimagename,detach=True,**argd)
              network.connect(containerid,ipv4_address=self.networkstaticip) (networkstaticip =172.21.0.21)

Even though i have provided a static ip, it wont use this static called using connect(). It only assigns random ip provided from network radio pool. Can someone help me on this

Start with the container creation and network.connect() calls shown in the issue, comparing their behavior with the docker run command and Docker Engine API networking semantics. Verify how the requested static IPv4 address and host port mapping are represented, and consider the work complete when the container retains 172.21.0.21 while exposing the specified UDP port.