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Re: is igmpproxy dfsg compliant?

On Thursday 24 November 2016 20:07:43 you wrote:
> > I do not know, but mrouted was relicensed to BSD in 2003 and
> > igmpproxy started in 2005 (according to year in source files). And
> > because BSD is compatible with GPL, you can relicense those parts
> > to GPL and adds your own GPL code to it. Then whole package can be
> > redistributed only under GPL...
> Of course, you can *not* do this.

Why? I think you must redistribute whole program as GPL. Section 2. of 
GPLv2 contains:

But when you distribute the same sections as part of a whole which is a 
work based on the Program, the distribution of the whole must be on the 
terms of this License, whose permissions for other licensees extend to 
the entire whole, and thus to each and every part regardless of who 
wrote it.

This does not mean that some parts cannot be still distributed under 
other license (e.g. mrouted parts under Stanford or BSD), but from that 
section I understood that whole igmpproxy can be distributed only under 

Pali Rohár

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