#!/bin/sh

# Many cable modems will accept web GUI connections on 192.168.100.1, so we can
# give the WAN interface an IP on that subnet, add some routing, and be able to
# access the modem's config from the LAN.
#

[ ! -f /jffs/scripts/wan-start ] && echo '#!/bin/sh' > /jffs/scripts/wan-start
cat << 'EOF' >> /jffs/scripts/wan-start

# add IP to WAN interface on cable modem's subnet
ifconfig `nvram get wan0_ifname`:0 192.168.100.2 netmask 255.255.255.0
EOF
chmod +x /jffs/scripts/wan-start

[ ! -f /jffs/scripts/nat-start ] && echo '#!/bin/sh' > /jffs/scripts/nat-start
cat << 'EOF' >> /jffs/scripts/nat-start

# routing for cable modem's subnet
iptables -t nat -I POSTROUTING -o `nvram get wan0_ifname` -j MASQUERADE
EOF
chmod +x /jffs/scripts/nat-start