Bind dlz mysql => subdomain delegation

Hello,

I'm trying to use dlz to manage several zones.
Basic thins working fine.

But I can't use subdomain delegation.
I'using the sample configuration
(http://bind-dlz.sourceforge.net/mysql_driver.html).

And i've got in the table :
| test.com | sub  |  3600 | NS    |  ns2.test.com. |

But host says:
sly bind # host -t NS  sub.test.com
Host sub.test.com not found: 2(SERVFAIL)

and named :
18-Feb-2008 21:00:21.618 dns_sdlz_putrr returned error. Error code was:
bad ttl

1) is it possible to use dlz for subdomain delegation
2) have you got a working sample.


ps: don't try to change SQL requests on named.conf =>
Segmentation fault   (core dumped) sbin/named -g -d6


Tanks  :)



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