1#!/bin/bash 2# Test that IPv4-over-IPv6 tunneling works. 3 4source lib.sh 5set -e 6 7setup_prepare() { 8 ip link add transport1 type veth peer name transport2 9 10 setup_ns ns1 11 ip link set transport1 netns $ns1 12 ip -n $ns1 address add 2001:db8::1/64 dev transport1 nodad 13 ip -n $ns1 address add 2001:db8::3/64 dev transport1 nodad 14 ip -n $ns1 link set transport1 up 15 ip -n $ns1 link add link transport1 name tunnel4 type ip6tnl mode ipip6 local 2001:db8::1 remote 2001:db8::2 16 ip -n $ns1 address add 172.0.0.1/32 peer 172.0.0.2/32 dev tunnel4 17 ip -n $ns1 link set tunnel4 up 18 ip -n $ns1 link add link transport1 name tunnel6 type ip6tnl mode ip6ip6 local 2001:db8::3 remote 2001:db8::4 19 ip -n $ns1 address add 2001:db8:6::1/64 dev tunnel6 20 ip -n $ns1 link set tunnel6 up 21 22 setup_ns ns2 23 ip link set transport2 netns $ns2 24 ip -n $ns2 address add 2001:db8::2/64 dev transport2 nodad 25 ip -n $ns2 address add 2001:db8::4/64 dev transport2 nodad 26 ip -n $ns2 link set transport2 up 27 ip -n $ns2 link add link transport2 name tunnel4 type ip6tnl mode ipip6 local 2001:db8::2 remote 2001:db8::1 28 ip -n $ns2 address add 172.0.0.2/32 peer 172.0.0.1/32 dev tunnel4 29 ip -n $ns2 link set tunnel4 up 30 ip -n $ns2 link add link transport2 name tunnel6 type ip6tnl mode ip6ip6 local 2001:db8::4 remote 2001:db8::3 31 ip -n $ns2 address add 2001:db8:6::2/64 dev tunnel6 32 ip -n $ns2 link set tunnel6 up 33} 34 35cleanup() { 36 cleanup_all_ns 37 # in case the namespaces haven't been set up yet 38 ip link delete transport1 &>/dev/null || true 39} 40 41trap cleanup EXIT 42setup_prepare 43ip netns exec $ns1 ping -q -W1 -c1 172.0.0.2 >/dev/null 44ip netns exec $ns1 ping -q -W1 -c1 2001:db8:6::2 >/dev/null 45