Service creating allows for two same published port in VirtualIp mode?

[allencloud]

Hi, All,

I tried the following command, and docker 1.12.1 allowed this:

docker service create -p 86:8001 -p 86:8000 ubuntu:14.04 sleep 10000

I published two same port for my service, and I think this is unreasonable for a service. Two different ports used inside a service mean that this service will listen to two different ports for different use, while the same published ports will make this situation ambiguous.

Please correct me if I am wrong and miss something.