(usagi-users 02048) Re: Suspicious change in ipv6_auth_hdr

[Kunihiro Ishiguro <kunihiro@xxxxxxxxxxxxxx>]

>RFC2402 2.2 Payload Length
>:
>   This 8-bit field specifies the length of AH in 32-bit words (4-byte
>   units), minus "2".  (All IPv6 extension headers, as per RFC 1883,
>   encode the "Hdr Ext Len" field by first subtracting 1 (64-bit word)
>   from the header length (measured in 64-bit words).  AH is an IPv6
>   extension header.  However, since its length is measured in 32-bit
>   words, the "Payload Length" is calculated by subtracting 2 (32 bit
>   words).)  In the "standard" case of a 96-bit authentication value

I see.  Thanks for clarification.  Now I understand comment of kuznet
for ipv6_auth_hdr().  
-- 
Kunihiro Ishiguro