In January 2006 we acquired an ASUS WL500G deluxe, which is a hardware router which also comes with a builtin 4-port ethernet switch, a wlan accesspoint and - which makes it very interesting - two USB2.0 ports. We reflashed that thing with the OpenWrt firmware, which went without any problems and turned the little device into a full sized linux box.

• Interfaces on ASUS WL500G Deluxe: LAN = vlan0, WAN = vlan0, WIFI = eth1

• Symptom: Syntax error: network+192.168.1.100
• Solution: dnsmasq expects the dhcp-ip-range to be given as integers, not as ip-adresses, so instead of

  nvram set dhcp_start 192.168.0.100
  nvram set dhcp_end 192.168.0.200
  nvram commit
  

  do a

  nvram set dhcp_start 100
  nvram set dhcp_end 200
  nvram commit
  

  and restart dnsmasq: /etc/init.d/S50dnsmasq

Source: OpenWrtDocs > dnsmasq

• Add to /etc/firewall.user:

  WIFI=$(nvram get wifi_ifname)
  iptables -A FORWARD -i $WIFI -o $WAN -j ACCEPT
  iptables -A FORWARD -i $WIFI -o $LAN -j ACCEPT
  iptables -A FORWARD -i $LAN -o $WIFI -j ACCEPT

• Set the following in nvram:

  lan_ifname=vlan0
  lan_proto=static
  lan_ipaddr=192.168.0.1
  lan_netmask=255.255.255.0
  
  wifi_ifname=eth1
  wifi_proto=static
  wifi_ipaddr=192.168.1.1
  wifi_netmask=255.255.255.0
  

  and commit it and reboot.

• Add to /etc/dnsmasq.conf:

  dhcp-range=lan,192.168.0.100,192.168.0.199,2h
  dhcp-range=wlan,192.168.1.100,192.168.1.199,2h
  

  and do a killall -9 dnsmasq ; /etc/init.d/S50dnsmasq.

• Sources:
  • OpenWrtDocs > Configuration > Sample network configurations
  • OpenWrtDocs > dnsmasq > Configuring dnsmasq to use different IP ranges for wired and wireless
  • openwrt: burning the bridge part II

• On a standard linux box of your choice:
  • wget http://foo2zjs.rkkda.com/foo2zjs.tar.gz && tar xvfz foo2zjs.tar.gz && cd foo2zjs
  • make
./getweb lj1000
  • Copy sihp1000.img to your router
• On your router:
  • Install the p910nd package according to the OpenWRT docs: ipkg install p910nd.
  • Install the kmod-usb-printer kernel modules: ipkg install kmod-usb-printer
  • Create a new file /etc/hotplug.d/usb/hplj1000:

    #!/bin/sh
     
    FIRMWARE="/data/sihp1000.img"
     
    if [ "$PRODUCT" = "3f0/517/120" ]
    then
            if [ "$ACTION" = "add" ]
            then
                    logger "Sending firmware to printer..."
                    cat $FIRMWARE > /dev/usb/lp0
                    logger "done."
            fi
    fi

    Remember to adjust the firmware location accordingly.

• Now configure the clients from which you want to print, according to the OpenWRT docs. You're done

• mpd on OpenWRT