Error on ListenPacket with wildcard address (":8080")

[hodduc]

When i Listen on ":8080" by udp with reuseport, following error occurs.

$ cat e.go
package main

import (
    "fmt"

    reuse "github.com/jbenet/go-reuseport"
)

func main() {
    _, err := reuse.ListenPacket("udp", ":8080")
    fmt.Println(err)
}

$ go run e.go
address family not supported by protocol

This breaks compatibility with golang's standard net.ListenPacket.

In Golang standard, they are guessing address family from network and wildcard address ( http://golang.org/src/net/ipsock_posix.go#L72)

[jbenet]

@hodduc good catch! have a suggested diff? i can take a look this weekend, but cant before

[anacrolix]

Fixed by #56 and #57.