-----Original Message-----
From: Rémi Després [mailto:remi(_dot_)despres(_at_)free(_dot_)fr]
Sent: Thursday, September 29, 2011 5:14 AM
To: Softwires-wg
Cc: Dan Wing; Teemu Savolainen; Satoru Matsushima; IETF discussion
list; Behave WG
Subject: Re: [BEHAVE] ... Dual Stack Hosts Using "Bump-in-the-Host"
(BIH))
Hi all,
Le 27 sept. 2011 à 21:10, Dan Wing a écrit :
-----Original Message-----
From: teemu(_dot_)savolainen(_at_)nokia(_dot_)com
[mailto:teemu(_dot_)savolainen(_at_)nokia(_dot_)com]
...
I mean does existing
applications work better if double translation is done in
deterministic
manner?
Yes, it allows the CPE to implement an ALG -- if an application needs
an ALG (e.g., active-mode FTP).
+1
As Softwire is concerned, it is worth noting here that, with
encapsulation rather than double translation, NO ALG is ever needed.
(Neither in ISP Border Relay nodes, nor in CPEs, nor in BIH hosts).
Do a message flow for active mode FTP with 4rd. I did one, and
it needs an ALG in the 4rd NAPT44 function.
-d
It is sometimes argued that double translation could be as simple than
encapsulation.
AFAIK, this discussion clearly indicates the contrary.
(No ALGs eliminates any variants about where to put them.)
RD
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