N6 network configuration problem

[seineo]

Hi, we're trying to deploy towards5gs-helm in Kubernetes. We made all pods running and TUN interface created, but UPF still can't reach DN via its N6 interface. Since we have different name of network interface enp1s0, we followed the Network Configuration to modify corresponding parameters in yaml files. We modify masterIf to enp1s0, and n6 network like this:

  n6network:
    name: n6network
    masterIf: enp1s0
    subnetIP: 192.168.31.0
    cidr: 24
    gatewayIP: 0.0.0.0
    excludeIP: 0.0.0.0

After we changed free5gc-upf.upf.n6if.ipAddress, the pods failed, so now it stays unchanged.

In a word, we're confused about N6 network configuration, can anyone help us?

P.S. Our node IP is 192.168.31.237/24.

Thanks.

[seineo]

After we changed the global n6network configuration as follows,

 n6network:
    name: n6network
    masterIf: enp1s0
    subnetIP: 192.168.31.0
    cidr: 24
    gatewayIP: 192.168.31.1
    # excludeIP: 0.0.0.0

and set free5gc-upf.upf.n6if.ipAddress as 192.168.31.89(chose arbitrarily)， we made it work!

Note: ip_forwardin the UPF pod should be 1.