Bind Submission IPv4 & IPv6 in Master.cf

[postfix]

New problem, i can not specify two IP's in the master.cf for submission 
to bind to.

This works:
127.0.0.1:submission inet n - n - - smtpd
This works:
[::1]:submission inet n - n - - smtpd

This does not work:
127.0.0.1,[::1]:submission inet n - n - - smtpd
127.0.0.1 [::1]:submission inet n - n - - smtpd

Keeps telling me [space] or [,] is invalid character. How can you bind 
submission to both IPv4 and IPv6?