-## Incoming multicast on a network interface associated with a trusted
-## network is OK, since it must have originated there (or been forwarded, but
-## we don't do that yet).
-for i in $(echo $if_trusted $if_dmz $if_safe | sed 'y/,/ /'); do
- echo $i
-done | {
- seen=:
- while read i; do
- case "$seen" in *:$i:*) continue ;; esac
- seen=$seen$i:
- run iptables -A inbound -j ACCEPT \
- -s 0.0.0.0 -d 224.0.0.0/24 \
- -i $i
- done
-}
-