About Teredo authentication indication

[<Markku.Ala-Vannesluoma@nokia.com>]

Hi,

In draft-huitema-v6ops-teredo-02.txt it is said in section 5.1.1 that "Both ID-len and AU-len can be set to null values if the server does not require an explicit authentication of the client.". When both the client identifier and the authentication value are set to null, the authentication indication gets a total length of 13 bytes. In such a case, the encapsulated IPv6 packet will not start from a memory address that is divisible by 4.
Doesn't this cause problems on platforms that need to worry about memory alignment?

Thanks,
Markku