get conntrack err on arm machine, error is 'invalid argument'

[Optimistic-MXK]

have somebody find this question? i just want to get connect track of machine, code like this

`package main

import (
"github.com/aceld/zinx/zlog"
"github.com/vishvananda/netlink"
)

func main() {
ConntrackFlow, err := netlink.ConntrackTableList(netlink.ConntrackTable, netlink.FAMILY_ALL)
if err != nil {
zlog.Error(err)
return
}

for _, v := range ConntrackFlow {
	zlog.Info(v.String())
}

}
`

when i run it on arm32 machine, the os is openwrt , code just reply "invalid argument". do you have a solution?