Subject: Re: IP header

From: James Adragna <[email-masked]>
Date: Thu, 4 Jan 2001 11:44:37 -0500

sorry, i meant the case where you don't have IPSEC
and must use the interim AH header. you need to prepend
the message with the source IP, destination IP, and
destination port when you do the calculation, but you
won't know which of your IP addresses the message will
go out on.

-----Original Message-----
From: Rosen, Brian [mailto:[email-masked]]
Sent: Wednesday, January 03, 2001 5:13 PM
To: [email-masked]
Subject: Re: IP header

You need the source IP address.

Some IPSEC implementations handle this correctly, some don't.

Brian

> -----Original Message-----
> From: James Adragna [mailto:[email-masked]]
> Sent: Wednesday, January 03, 2001 1:58 PM
> To: [email-masked]
> Subject: IP header
>
>
> Hello
>
> How does a multihomed device create the IP header
> required for the AH calculation? The header needs
> the source IP address, but this may not be known
> at the time of the calculation.