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f77c7b9601
commit 81c734dae2 ("ip6_tunnel: use skb_vlan_inet_prepare() in
__ip6_tnl_rcv()") was fine in and of itself, but its backport to 6.12
(and 6.6) broke IPv4-in-IPv6 tunneling, see [1]. This adds a self-test
for basic IPv4-in-IPv6 and IPv6-in-IPv6 functionality.
[1]: https://lore.kernel.org/all/CAA2RiuSnH_2xc+-W6EnFEG00XjS-dszMq61JEvRjcGS31CBw=g@mail.gmail.com/
Signed-off-by: Linus Heckemann <git@sphalerite.org>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Ricardo B. Marlière <rbm@suse.com>
Tested-by: Ricardo B. Marlière <rbm@suse.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260221114806.1231666-1-git@sphalerite.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
45 lines
1.6 KiB
Bash
Executable File
45 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# Test that IPv4-over-IPv6 tunneling works.
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source lib.sh
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set -e
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setup_prepare() {
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ip link add transport1 type veth peer name transport2
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setup_ns ns1
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ip link set transport1 netns $ns1
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ip -n $ns1 address add 2001:db8::1/64 dev transport1 nodad
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ip -n $ns1 address add 2001:db8::3/64 dev transport1 nodad
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ip -n $ns1 link set transport1 up
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ip -n $ns1 link add link transport1 name tunnel4 type ip6tnl mode ipip6 local 2001:db8::1 remote 2001:db8::2
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ip -n $ns1 address add 172.0.0.1/32 peer 172.0.0.2/32 dev tunnel4
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ip -n $ns1 link set tunnel4 up
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ip -n $ns1 link add link transport1 name tunnel6 type ip6tnl mode ip6ip6 local 2001:db8::3 remote 2001:db8::4
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ip -n $ns1 address add 2001:db8:6::1/64 dev tunnel6
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ip -n $ns1 link set tunnel6 up
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setup_ns ns2
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ip link set transport2 netns $ns2
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ip -n $ns2 address add 2001:db8::2/64 dev transport2 nodad
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ip -n $ns2 address add 2001:db8::4/64 dev transport2 nodad
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ip -n $ns2 link set transport2 up
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ip -n $ns2 link add link transport2 name tunnel4 type ip6tnl mode ipip6 local 2001:db8::2 remote 2001:db8::1
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ip -n $ns2 address add 172.0.0.2/32 peer 172.0.0.1/32 dev tunnel4
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ip -n $ns2 link set tunnel4 up
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ip -n $ns2 link add link transport2 name tunnel6 type ip6tnl mode ip6ip6 local 2001:db8::4 remote 2001:db8::3
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ip -n $ns2 address add 2001:db8:6::2/64 dev tunnel6
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ip -n $ns2 link set tunnel6 up
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}
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cleanup() {
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cleanup_all_ns
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# in case the namespaces haven't been set up yet
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ip link delete transport1 &>/dev/null || true
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}
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trap cleanup EXIT
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setup_prepare
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ip netns exec $ns1 ping -q -W1 -c1 172.0.0.2 >/dev/null
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ip netns exec $ns1 ping -q -W1 -c1 2001:db8:6::2 >/dev/null
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