Dear Murakami-San,
I'm very concerned about your work on
MAP-T. I've read the draft-mdt-softwire-map-translation-01, and I'm confused
with some statements in the draft. Questions are as follows:
1. In section 7.4, there is a statement saying
"Otherwise, the IPv6
destination address (IPv4-translatable address) MUST be derived from
the received IPv4 destination address per DMR."
I'm wondering if the IPv4-translatable address here should be
IPv4-converted address.
2. In section 7.5, the expressions of
"IPv6-converted address" and "IPv6-translatable address" confused me. I am
wondering if the "IPv6-converted address" should be "IPv4-converted address"or
not, and if the "IPv6-translatable address" should be "IPv4-translatable
address".
Here is are two pictures which depict my understanding of the draft.
Pic 1. Upstream from CE to BR:
CE
BR
IPv4 src BMR IPv6 src
(IPv4-translatable) FMR IPv4 src
--------------> -------------->
IPv4 dst FMR, DMR IPv6 dst (IPv4-converted) DMR IPv4 dst
Pic 2. Downstream from BR to CE:
CE
BR
IPv4 src FMR, DMR IPv6 src
(IPv4-converted) DMR IPv4 src
<-------------- <--------------
IPv4 dst BMR IPv6 dst (IPv4-translatable) FMR IPv4 dst
I'm not so sure if my understanding is right. Please correct me if there is
any mistake I've made. Thank you very much!
Best regards!
Yuchi Chen
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