Comment 0 for bug 1644415

I have a mitaka enviroment with one controller host, one network host and two computer hosts. All the l3 agents of my computer hosts and network host are configed as dvr_snat mode. I created a dvr+ha router and boot a vm with one of subnet associated with this router. This vm accesses the internet normally before or after associating a floating ip with it. But when I disassociated the floating ip, the vm can not access the internet any more.

Pre-conditions:
    run L3 agent with dvr_snat mode on network nodes and compute nodes

How to reprocude:
    create a dvr+ha router
    create a subnet and associate this subnet with the router
    create a vm with the subnet
    associate a floating ip with the vm and then disassociate it
    the vm can not access internet

Analysis:
    I found that the ip rule "36709: from 10.10.30.4 lookup 16"(this ip is the vm's fixed ip) is still in the router's qrouter namespace on the compute host, although I diassociated the floating ip. Then I debug the code and found dvr_edge_ha_router can not execute code into remove_floating_ip function.