Moreover, if the banks were to hold the stock on issue, the government bond market would no longer retain any liquidity, which would be completely self-defeating. Hence it was announced late last year that the RBA would provide a committed liquidity facility to meet the shortfall between banks' holdings of government paper and their total liquidity needs.
On that note, all that remains is for me to wish you a pleasant evening and many an interesting discussion. 6/6  BIS central bankers' speeches