#!/usr/bin/env python
from iexceptions import ExecBashError, GetHostNetdevError
from libs.misc import system


def get_netdev_for_host_ip(ip):
    cmd = "ip addr | grep {ip}".format(ip=ip)

    rc, so, se = system(cmd)
    if rc:
        raise ExecBashError(cmd=cmd, msg=so)

    ls = so.strip().split()
    if len(ls) < 1:
        raise GetHostNetdevError(so)

    return ls[-1].strip()