#!/bin/sh
INTERFACE=$2
if [ -z "$INTERFACE" ]; then
	tracebox -m 30 -l "pkt = ip{dst=to} / tcp{dst=65101} / MPCAPABLE / MSS / WSCALE if string.find(tostring(tracebox(pkt)),'MPTCP') then print 'MPTCP enabled' else print 'MPTCP disabled' end" $1
else
	tracebox -m 30 -l "pkt = ip{dst=to} / tcp{dst=65101} / MPCAPABLE / MSS / WSCALE if string.find(tostring(tracebox(pkt)),'MPTCP') then print 'MPTCP enabled' else print 'MPTCP disabled' end" -i $INTERFACE $1
fi