"can be the same" is fine (i.e., if the mapping produces the same output as its 
input, that's ok, but mapping is involved).
The current draft text (as I read it) implies "are always the same" and that 
needs to be corrected.

Thanks,
--David

> -----Original Message-----
> From: Dino Farinacci [mailto:[email protected]]
> Sent: Thursday, February 12, 2015 9:57 AM
> To: Black, David
> Cc: Luigi Iannone; [email protected]; [email protected]; Albert Cabellos; Damien
> Saucez; [email protected]
> Subject: Re: [lisp] OPS-Dir review of draft-ietf-lisp-introduction-11 [B]
> 
> They can be the same if the underlay provider wants to control overlay's group
> address allocation.
> 
> Dino
> 
> 
> > On Feb 12, 2015, at 6:50 AM, Black, David <[email protected]> wrote:
> >
> > I don't care what terms are used - it just needs to be absolutely clear that
> > the inner and outer multicast addresses are not the same and that mapping
> > between them (which could take a number of forms) is involved.
> >
> > Thanks,
> > --David
> >
> >> -----Original Message-----
> >> From: Dino Farinacci [mailto:[email protected]]
> >> Sent: Thursday, February 12, 2015 8:15 AM
> >> To: Luigi Iannone
> >> Cc: Black, David; [email protected]; [email protected]; Albert Cabellos; Damien
> >> Saucez; [email protected]
> >> Subject: Re: [lisp] OPS-Dir review of draft-ietf-lisp-introduction-11
> >>
> >>> G-EID     =>  the EID multicast group G
> >>> G-RLOC =>  the RLOC multicast group G
> >>
> >> "inner and outer group addresses" have been used in various LISP multicast
> >> documents.
> >>
> >> Dino

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