The terminal pair of dorsal red glands suggests Lymantriidae, but the only Lymantriid caterpillar that I know that is plain brown with neither dorsal tussocks nor a pair of hair pencils is Leptocnaria reducta. Is there a White Cedar tree (Melia azedarach) within 20 metres?
donhe It was in the local park which is mainly Gums and other natives there may be a White Cedar tree in the nearby street within 20 metres the parrots love the fruit.