IPFW 訂正
ping も打てなくなってしまったので訂正。
#${fwcmd} add deny all from 10.0.0.0/8 to any #${fwcmd} add deny all from 172.16.0.0/12 to any #${fwcmd} add deny all from 192.168.0.0/16 to any #${fwcmd} add deny all from 0.0.0.0/8 to any #${fwcmd} add deny all from 169.254.0.0/16 to any #${fwcmd} add deny all from 192.0.2.0/24 to any #${fwcmd} add deny all from 224.0.0.0/4 to any #${fwcmd} add deny all from 240.0.0.0/4 to any
これで大丈夫なはず。