Problem with different TTL

Hello,

I'm having a bit of trouble at the moment with records with different TTL.
for www.test.menfin.net, I return 2 records. If both TTL are the same, 
everything is fine. If they are different, I have 2 behaviors
With a regular text file, the 1st record TTL is returned for both 
records. If the query is answered by dlz, then nothing is returned.
In the logs : dns_sdlz_putrr returned error. Error code was: bad ttl

I know this question has been discussed in the past, but I still don't 
understand why such a difference between bind and dlz.
http://article.gmane.org/gmane.network.dns.bind9.dlz/439/

If such behavior isn't a wanted/good thing, could it be possible to make 
dlz behave like bind ?
Or maybe does anyone know if this has been fixed/changed in more recent 
versions ?

Regards.

Environment :
     gentoo / bind 9.4.3-p4 (ipv6, dlz, mysql, ssl)

Aurelien

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