#!/bin/sh -e

. sh-functions
. guess-functions

iface=
if [ -n "$1" ]; then
	[ -n ${1##iface=?*} ] ||
		exit 1
	iface=${1#iface=}
fi

if [ -n "$iface" ]; then
	guess_device "/class/net/$iface"
	exit 0
fi

for iface in "$SYSFS_PATH"/class/net/*; do
	guess_device "${iface#$SYSFS_PATH}"
done
