help with notify-source

[tony z]

I have a BIND 9.x server with multiple ethernet interfaces and IPs.
I need the NOTIFY messages to go out on a specific IP, because I am using TSIG updates
to my slave and that slave will not accept a TCP NOTIFY connection from any other than one of
my specific IPs.
I put a notify-source directive inside my zone files and options area, but nothing seems to work.
BIND/named seems to randomly rotate through all my IPs sending NOTIFY, until it uses the IP
that my slave wants to hear from, and then the transfer from master to slave happens. But this takes like hours.
Does notify-source actually work, or am I using the wrong directive or using the right directive in the wrong manner.

thanks,
tony