[Ipsec] Query for IPv6 ICV
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[Ipsec] Query for IPv6 ICV



Hi,

 

I’m trying to establish an IPSEC session over IPv6 with Windows XP and FreeBSD (Kame’s implementation) AH Transport mode with HMAC-MD5 authentication. Windows sends an ICV of 20 bytes (with 4 padded 0 bytes) and FreeBSD simply discards the packet.

 

RFC 2403 states that HMAC-MD5-96 produces a 128 bit authenticator value and a truncated value using the first 96 bits MUST be supported.

 

I want to know that IPSEC standards say about ICV size in case of IPv6.

 

Thanks in advance.

 

Kind regards,

Muhammad Irfan Khan

 

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