I want to get the MAC address of the host in the POD, the POD network doesn't use hostnetwork. I found that the node UID's suffix is the host' MAC address and I want to find the source where this UID value get from?

The suffix of uid (525400a9edd3) is the MAC address(ether 52:54:00:a9:ed:d3) of that host?

kubectl get nodes node1 -o yaml
apiVersion: v1
kind: Node
metadata:
...
  uid: 96557f0f-fea6-11e8-b826-525400a9edd3
...

ifconfig eth0
        eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.16.68.1  netmask 255.255.0.0  broadcast 172.16.255.255
        inet6 fe80::5054:ff:fea9:edd3  prefixlen 64  scopeid 0x20<link>
        ether 52:54:00:a9:ed:d3  txqueuelen 1000  (Ethernet)

Could you help me to find how node uid is created accros the source code?

I want to know the host MAC address in kubernetes pod where that pod runing on.