Hi Sarang, sorry for not responding on time..

First of all, I used Calico CNI without overlay i.e. POD IPs are accessible directly within my network, so I used the POD IP (AMF) directly in UERANSIM, I did this by setting a static route towards the k8s POD IP range on the UERANSIM VM.

You will have to confirm that you can ping the AMF and UPF POD IPs from UERANSIM.

Let me know if there is need for more clarification