Is this a BUG REPORT or FEATURE REQUEST?:

/kind bug

What happened:

There are some failures in ubuntu-gce-ipvs CI job. See, http://k8s-testgrid.appspot.com/google-gce#ubuntu-gce-ipvs

What you expected to happen:

We want to see CI job green!!

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

@Lion-Wei @stewart-yu in my team will together take care of gci-gce-ipvs CI job.

Environment:

• Kubernetes version (use kubectl version):
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

/sig network