#!/bin/sh

. lib/generic.sh

TUNNEL_NAME="tunnel_test_ip"

KMODS="ip6_gre ip6_tunnel ip_gre ip_tunnel gre"

# unload kernel modules to remove dummy interfaces only if they were not in use beforehand

kmods_remove=

# note that checkbashism reports command -v, but dash supports it and it's POSIX 2008 compliant

if command -v lsmod >/dev/null 2>&1 && command -v rmmod >/dev/null 2>&1; then

    for i in $KMODS; do

        lsmod | grep -q "^$i" || kmods_remove="$kmods_remove $i";

    done

fi

ts_log "[Testing add/del tunnels]"

ts_ip "$0" "Add GRE tunnel over IPv4" tunnel add name $TUNNEL_NAME mode gre local 1.1.1.1 remote 2.2.2.2

ts_ip "$0" "Del GRE tunnel over IPv4" tunnel del $TUNNEL_NAME

ts_ip "$0" "Add GRE tunnel over IPv6" tunnel add name $TUNNEL_NAME mode ip6gre local dead:beef::1 remote dead:beef::2

ts_ip "$0" "Del GRE tunnel over IPv6" tunnel del $TUNNEL_NAME

for mod in $kmods_remove; do

    sudo rmmod "$mod"

done