#!/bin/sh
INTERFACE=$2
if [ -z "$INTERFACE" ]; then
	tracebox -m 20 -l "pkt = ip{dst=to} / tcp{dst=65101} / MPCAPABLE / MSS / WSCALE if string.find(tostring(tracebox(pkt)),'-TCPOptionMPTCPCapable') then print 'MPTCP disabled' elseif string.find(tostring(tracebox(pkt)),'MPTCP') then print 'MPTCP enabled' end" $1
else
	tracebox -m 20 -l "pkt = ip{dst=to} / tcp{dst=65101} / MPCAPABLE / MSS / WSCALE if string.find(tostring(tracebox(pkt)),'-TCPOptionMPTCPCapable') then print 'MPTCP disabled' elseif string.find(tostring(tracebox(pkt)),'MPTCP') then print 'MPTCP enabled' end" -i $INTERFACE $1
fi