Re: [v6ops] draft-ietf-v6ops-ula-usage-recommendations - work or abandon?

[Fernando Gont <[e-mail]>]

On 11/13/2015 03:05 AM, Owen DeLong wrote:
>>> They still work fine on networks that
>>> operate the way the Internet was originally designed with end-to-end
>>> connectivity.
>>
>> not sure what you mean by "end-to-end" connectivity.
> 
> I won’t speak for Lorenzo, but what I mean when I talk about “end-to-end”
> is the situation where the L3 packet that leaves the origin host arrives
> at the destination host without being modified except for certain fields
> intended to be modified in flight. (Namely TTL/Hop Count, L2 and lower
> layer fields, etc.). Certainly the L3 and higher layer identifiers are not
> to be tampered with in flight.

FTP PORT doesn't work fine in firewalled environments. It requires a
middlebox to tap into the FTP control protocol so that the fw can open
the necessary holes. -- So the only networks where FTP PORT works fine
is un-NATed, unfiltered networks -- which is kind of Wonderland.

Thanks,
-- 
Fernando Gont
SI6 Networks
e-mail: [e-mail]
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