I ran these two commands:
rmmod nf_nat_sip
rmmod nf_conntrack_sip
Then edited this line:
DONT_LOAD=
In these two files:
/etc/e-smith/templates/etc/shorewall/shorewall.conf/60options
/etc/shorewall/shorewall.conf
to:
DONT_LOAD=nf_nat_sip,nf_conntrack_sip