Example of RFC 3978 incompatible license in draft-eastlake-sha2-02.txt

There has been an argument from the IAB that the "GNU Public License"
(sic) is incompatible with the RFC 3978 license, and thus code
licensed under that license cannot be part of a document.  I'm told
this IAB notice should be sent to this WG, but I haven't seen it yet.

Meanwhile, I'd like to point out that recently approved
draft-eastlake-sha2-02 contains this license:

1.1 License

   Royalty free license to copy and use this software is granted
   provided that this document is identified in all material mentioning
   or referencing this software. Royalty free license is also granted to
   make and use derivative works provided that such works are identified
   as derived from this work.

   The authors make no representations concerning either the
   merchantability of this software or the suitability of this software
   for any particular purpose. It is provided "as is" without express or
   implied warranty of any kind.

As far as I can tell, this is incompatible with the RFC 3978 license.

The license also seems incompatible with the notion that code excerpts
should be modifiable, without additional restrictions.

Personally, I believe the license above, and the (L)GPL, are fine for
use on code in RFCs.

Are there any thoughts on license incompatibilities from the IPR WG?

Thanks,
Simon

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