dnsmasq and SOA

[RODARY Jacques]

        I finally surrendered, and now use dnsmasq instead of bind. But
in my setup with named,  my box was Start Of Authority, and when there
was a change and reload of the zone files, the only other name server
was notified, before the TTL is over. How can I do that with dnsmasq?
If the dnsmasqHowto wiki is quite clear, but not very detailed, the
manpage is too detailed, and not clear to me. Thanks for your help.
        Jacques