1)  The IPv6 allowBcast built-in action generates an invalid ip6tables
    rule. This defect is present in all versions of Shorewall that 
    support IPv6.

    Fixed in Shorewall 4.4.10.1.

2)  If IPSET=<pathname> is specified in shorewall.conf, then when an
    ipset is used in a configuration file entry, the following fatal
    compilation error occurs:

    ERROR: ipset names in Shorewall configuration files require Ipset
    Match in your kernel and iptables : /etc/shorewall/rules (line nn)

    You can work around this problem by executing the following at a
    root shell prompt:

    	 shorewall show -f capabilities > /etc/shorewall/capabilities

    Fixed in Shorewall 4.4.10.1. After installing this fix, if you 
    executed the above command to work around the problem, we recommend
    that you remove /etc/shorewall/capabilities.