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>> I'd be greatly surprised if the affected code looked different in 6.x.
>>     
>
> There is No unsetenv in 6.2-RELEASE/src/libexec/rtld-elf/rtld.
> There Is    unsetenv in 6.[34]-RELEASE/src/libexec/rtld-elf/rtld.
>   
Yeah, I already saw that (and am surprised :) ).

My comment was just based on looking at my own 8.0-release, thought I
had made that clear. Sorry if that mislead anyone.