vlan to vxlan packet size difference is 46bytes 60bytes or ?

```
Ethernet = 14 bytes
VXLAN   = 8 Bytes
IPv4        = 20 bytes
UDP       = 8 Bytes

14 + 8 + 20 + 8 = 50 bytes 

VLAN = 4 bytes
```

difference between VLAN and corresponding VXLAn packets is of 46 bytes

i believe the BG traffic is using 60 bytes as difference

what is the right value and why ?