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As per IPSec RFC4301 [1], any non-matching packets should be dropped by
default. This is handled correctly in ipsec_output.c, however in
ipsec_input.c non-matching packets are allowed to pass as per a matched
BYPASS rule.
For full details, see:
https://lists.fd.io/g/vpp-dev/topic/ipsec_input_output_default/84943480
It appears the ipsec6_input_node only matches PROTECT policies. Until
this is extended to handle BYPASS + DISCARD, we may wish to not drop
by default here, since all IPv6 traffic not matching a PROTECT policy
will be dropped.
[1]: https://datatracker.ietf.org/doc/html/rfc4301
Type: fix
Signed-off-by: Zachary Leaf <zachary.leaf@arm.com>
Change-Id: Iddbfd008dbe082486d1928f6a10ffbd83d859a20
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Zachary Leaf