1)  On systems running Upstart, shorewall-init cannot reliably secure
    the firewall before interfaces are brought up.

2)  The 'enable', 'reenable' and 'disable' commands do not work
    correctly in configurations with USE_DEFAULT_RT=No and optional
    providers listed in the DUPLICATE column.

3)  In Shorewall 5.1.2, the 'shorewall show action allowinUPdP' fails
    with a 'file not found' error.

    Corrected in 5.1.2.1.

4)  In Shorewall 5.1.2, when BLACKLIST is used in the blrules file,
    logging does not occur even if BLACKLIST_LOG_LEVEL is set.

    Corrected in 5.1.2.1.
