Describe the bug

Creation of EIP fails with eth0's ip and the eip[192.168.0.91-192.168.0.100] are not in the same network segment. It should not be a requirement that the IP's are in the same segment as the interface.

To Reproduce

Given the following

apiVersion: network.kubesphere.io/v1alpha2
kind: Eip
metadata:
  name: layer2-eip
spec:
  address: 192.168.0.91-192.168.0.100
  interface: eth0
  protocol: layer2

Expected behaviour

The EIP should be created, and arp should respond on eth0

Output

eth0's ip and the eip[192.168.0.91-192.168.0.100] are not in the same network segment

Version Info

• Version of Kubernetes:
• Version of OpenELB: 0.6.0