The creative commons 3 still needs explicit permission I believe as osm is not able to give attribution as expected by the licence and we are only able to attribute by listing on our web page and the explicit permission is for the data provider to be happy with that.
You may find the Ipswich city council is happy to provide it if asked.
There is more info out this on our web pages and probably linked from the link I gave earlier.
If you are able to visit and gather the info via your phone or gps then that is best.
I usually cycle local areas and benefit from the exercise too.