The port-chain-update API functionality fails to reverse order to PPGs

[Dimitrios Markou]

I am using the networking-sfc API through Tacker to update the PPGs which are used in an existing chain.

When I am trying to reverse the order of the PPGs that are used in an existing chain through the update_port_chain API functionality the result is that the order is not updated but remains the same as before. The follwing example describes exactly that:

Let's say that the current chain connects the PPGs [red,blue]. If I try to update the chain through n-sfc API and pass to the update function the reverse order of the PPGs like [blue,red] the n-sfc will still give the result [red,blue]

[Cong Phuoc Hoang (hoangphuoc)]

I met this error too. Even with [blue, red] --> [red] --> [red, blue] but the result still [blue, red]