IPsec
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... IPv6
communication.
A major concern is that it is generally not possible to use IPsec or
other means to authenticate the sender and validate ...
... SEND sidesteps security association
bootstrapping problems that would result if IPsec was used. SEND
affects only link-local ...
... Although Renumbering messages are required to be authenticated with
IPsec, so that it is difficult to carry out such attacks in practice,
they should not be allowed through a site boundary firewall ...
... authenticated on delivery, probably because they
contain an IPsec AH header or ESP header with authentication ...
... Router Renumbering messages must be authenticated using IPsec, so it
is not essential to filter these messages even if they are not
...
...
Router Renumbering messages are required to be protected by IPsec
authentication since they could be readily misused by attackers ...