play - "Listening for HTTP on /0:0:0:0:0:0:0:0%0:9000"

Question

Why kind of address Listening for HTTP on /0:0:0:0:0:0:0:0%0:9000 is? Is it the expected output? Shouldn't it be something like localhost printed instead? Except this weird console output everythign works fine. I am running play framework 2.1.1 on OsX.

Answer 1

That is the IPv6 unspecified address which means listen on all addresses, including the localhost address.

Answer 2

0:0:0:0:0:0:0:0%0 in ipv6 is something like localhost in ipv4 (exact localhost address in ipv6 is ::1 )

you can see the result of your Play app by viewing localhost:9000 in your browser