package main

import (
	"fmt"
	"encoding/json"
	"os"
	"bufio"
)

// ip -j -p link
// [ {
//        "ifindex": 1,
//        "ifname": "lo",
//        "flags": [ "LOOPBACK","UP","LOWER_UP" ],
//        "mtu": 65536,
//        "qdisc": "noqueue",
//        "operstate": "UNKNOWN",
//        "linkmode": "DEFAULT",
//        "group": "default",
//        "txqlen": 1000,
//        "link_type": "loopback",
//        "address": "00:00:00:00:00:00",
//        "broadcast": "00:00:00:00:00:00"
//    },{
//        "ifindex": 2,
//        "ifname": "enp0s31f6",
//        "flags": [ "NO-CARRIER","BROADCAST","MULTICAST","UP" ],
//        "mtu": 1500,
//        "qdisc": "fq_codel",
//        "operstate": "DOWN",
//        "linkmode": "DEFAULT",
//        "group": "default",
//        "txqlen": 1000,
//        "link_type": "ether",
//        "address": "8c:16:45:32:c7:b2",
//        "broadcast": "ff:ff:ff:ff:ff:ff"
//    } ]

type intf struct {
	IfIndex int `json:"ifindex"`
	IfName string `json:"ifname"`
	Flags []string `json:"flags"`
	Mtu int `json:"mtu"`
	Qdisc string `json:"qdisc"`
	OperState string `json:"operstate"`
	LinkMode string `json:"linkmode"`
	Group string `json:"group"`
	TxqLen int `json:"txqlen"`
	LinkType string `json:"link_type"`
	Addr string `json:"address"`
	Broadcast string `json:"broadcast"`
}

func main() {
	v := []intf{}

	stdin := bufio.NewReader(os.Stdin)
	json.NewDecoder(stdin).Decode(&v)

	for _, v := range v {
		fmt.Printf("id: %4d, name: %12s, state: %8s, mac: %s\n",
			v.IfIndex, v.IfName, v.OperState, v.Addr)
	}

}