Subject: RE: [Mobike] straw poll on issue 20 (selection ipsec sa addresses andwho decides)

From: <[email-masked]>
Date: Thu, 19 May 2005 09:01:20 +0300

Jari Arkko wrote:
>
> Please make your opinion, along with its justifications,
> known by May 25th.

Option 3, "Initiator decides". Reasons:

- Simple. Very simple in the mobile client connected to 
  stationary gateway case.
- Makes it easy to get the same address pair for both directions.
  This is important for two different reasons. First, it simplifies
  things if the network contains stateful firewalls or NATs. Second,
  it's straightforward to implement typical mobility cases, e.g. 
  laptop can move both upstream and downstream traffic from GPRS 
  to WLAN or vice versa, even if both interfaces work.
- It does not prevent us from doing the non-mobile multihoming cases 
  either, e.g. gateway-to-gateway.

Best regards,
Pasi
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