[DNA] Comment on draft-jinchoi-dna-goals-00

["S. Daniel Park" <soohong.park@samsung.com>]

Firstly, I quite agree it is a valuable draft at this stage 
and here is my comments as well as minor editorials; 

[1]
This draft uses an ambiguous terminology as "node". 
As indicated in RFC, node means both host and router
however AFAIC almost node wrote in this draft just mean 
host not router. So you have to clarify that altogether. 

[2] 
"L3 link" is not proper since link as also indicated in RFC
means the layer immediately below IPv6. IMO L3 or IP layer
is correct.

[3] 
>1) Link local scope of Router Address  
>So if it happens that two different router interfaces have the 
>same link-local address, a host can't detect that it has 
>moved from one interface to another by checking the router 
>address in Router Advertisement messages. 

I don't think above case is a real model, why two different router
interfaces are used with the same MAC ? did you have any 
experience on that ?

[4] 
>Alternatively a host can monitor periodic RA beacons.

RA beacons should be replaced with RAs. Beacon seems 
like a low layer terminology not IP layer.

[5]
>To design adequate DNA schemes, we'd better investigate how
>to 1) design a RA optimized for DNA and 
>2) deliver a DNA optimized RA to a host sufficiently fast.  

It is so ambiguous to make sense clearly. I think (1) is focused
on both host and router and (2) is focused on router only. correct ?
Or (1) means only host ? Please clarify it with some text.

[6]
>G3. In the case where a host has not changed link or subnet, 
>IP configuration change should not occur. 

Don't you consider renumbering case without link change ? in 
this case, host wil change its IP configuration regarding
new prefixes and addresses.

my proposal:
G3: In the case where a host has not changed link or subnet,
IP configuration change should not occur. However in renumbering
case, a host can receive new prefixs and addresses in current link
and modify its old configuration without link or subnet change.

========================
minor editorials;

[1]
A host can check link change to determine the validity of 
it IP configuration. 

s/it IP configuration/its IP configuration

[2]
The validity of other IP subnet related configuration is 
implied by Router Advertisements, if RA reception implies 
subnet change. Particularly, Dynamic Host Configuration 
protocols [DHCPv6] are explicitly indicated in RA messages, 

s/protocols/protocol or protocol for IPv6
s/are/is

[3]
all around
s/new (IP) configuration/a new (IP) configuration 



Holp this help...


Regards

	
- Daniel (Soohong Daniel Park)
- Mobile Platform Laboratory, SAMSUNG Electronics.