Re: [Softwires] Fragmentation in sdnat-02

2012-03-27 Thread Francis Dupont
In your previous mail you wrote: This is an issue common to all stateless solutions, including deterministic NAT with (anaycast) IPv4 address pool. = +1! In fact, it is an issue common to all solutions implying mandatory filtering on transport fields (aka layer 4) including ports. Regards

Re: [Softwires] Fragmentation in sdnat-02

2012-03-27 Thread Francis Dupont
In your previous mail you wrote: In this context, the important consideration is AFAIK that it is completely acceptable to lose fragmented packets that, with bad luck, happen to be routed via distinct BRs when there is a route change. Frequent route changes would have many more severe

Re: [Softwires] Fragmentation in sdnat-02

2012-03-23 Thread Rémi Després
Fan; Softwires Objet : Re: [Softwires] Fragmentation in sdnat-02 2012/3/21, mohamed.boucad...@orange.com mohamed.boucad...@orange.com: Dear Washam, This is an issue common to all stateless solutions, including deterministic NAT with (anaycast) IPv4 address pool. FWIW, we recorded

Re: [Softwires] Fragmentation in sdnat-02

2012-03-23 Thread mohamed.boucadair
Mohamed OLNC/NAD/TIP Cc : Washam Fan; Softwires Objet : Re: [Softwires] Fragmentation in sdnat-02 2012/3/21, mohamed.boucad...@orange.com mohamed.boucad...@orange.com: Dear Washam, This is an issue common to all stateless solutions, including deterministic NAT with (anaycast) IPv4 address

Re: [Softwires] Fragmentation in sdnat-02

2012-03-23 Thread Rémi Després
] Envoyé : vendredi 23 mars 2012 10:02 À : BOUCADAIR Mohamed OLNC/NAD/TIP Cc : GangChen; Softwires Objet : Re: [Softwires] Fragmentation in sdnat-02 Hi, Med, Thanks for this question. 1. As we know, all fragments of a packet from a given off-domain host to a given in-domain IPv4

Re: [Softwires] Fragmentation in sdnat-02

2012-03-23 Thread Rémi Després
Hi, Washam, Le 2012-03-23 à 03:08, Washam Fan a écrit : There is no text saying 4rd-u BRs are anycasted to IPv4 network in the first place. Remi, could you clarify on this? Thanks, washam Not sure to understand the question. IPv4 routing toward BRs is based on IPv4 prefixes (which are

Re: [Softwires] Fragmentation in sdnat-02

2012-03-22 Thread mohamed.boucadair
: BOUCADAIR Mohamed OLNC/NAD/TIP Cc : Washam Fan; Softwires Objet : Re: [Softwires] Fragmentation in sdnat-02 2012/3/21, mohamed.boucad...@orange.com mohamed.boucad...@orange.com: Dear Washam, This is an issue common to all stateless solutions, including deterministic NAT with (anaycast) IPv4

Re: [Softwires] Fragmentation in sdnat-02

2012-03-22 Thread GangChen
, Med -Message d'origine- De : GangChen [mailto:phdg...@gmail.com] Envoyé : jeudi 22 mars 2012 08:33 À : BOUCADAIR Mohamed OLNC/NAD/TIP Cc : Washam Fan; Softwires Objet : Re: [Softwires] Fragmentation in sdnat-02 2012/3/21, mohamed.boucad...@orange.com mohamed.boucad...@orange.com: Dear

Re: [Softwires] Fragmentation in sdnat-02

2012-03-21 Thread mohamed.boucadair
the severity of this issue in all operational networks. Cheers, Med -Message d'origine- De : softwires-boun...@ietf.org [mailto:softwires-boun...@ietf.org] De la part de Washam Fan Envoyé : mercredi 21 mars 2012 07:25 À : Softwires Objet : [Softwires] Fragmentation in sdnat-02 Hi