====== Information ======

  * [[https://www.netgear.com/home/products/networking/wifi-routers/R6260.aspx|NETGEAR R6260]]
  * [[https://openwrt.org|OpenWrt]]
  * [[https://openwrt.org/toh/netgear/r6260|OpenWrt Device Page]]
  * [[https://openwrt.org/releases/snapshot|Snapshot]]

===== Notes =====

  * 2021/04/28: Dropping invalid packets (firewall) causes an Oculus Quest 2 to not load it's own store/home page
  * 2021/06/14: Enabling ''Use broadcast flag'' causes WAN not to work (Comcast/Xfinity)
  * 2021/06/29: Enabling ''802.11w Management Frame Protection'' on 2.4GHz caused a NC200 to not be able to connect
  * Stock firmware reports ''d(149)+p(153)+d(157)+d(161)'' for 5GHz channels with ''153'' selected and ''11(P)+7(S)'' for 2.4GHz with ''11'' selected

====== Snapshot ======

==== Links ====

  * ''ramips/mt7621''

  * [[https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/openwrt-ramips-mt7621-netgear_r6260-squashfs-factory.img|factory.bin]]
  * [[https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/openwrt-ramips-mt7621-netgear_r6260-squashfs-sysupgrade.bin|sysupgrade.bin]]

==== sysupgrade ====

  * This downloads the latest ''sysupgrade.bin'' and installs it

  ssh root@192.168.1.1

  rm -f '/tmp/sysupgrade.img' && sync && sysupgrade --force -n -v 'https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/openwrt-ramips-mt7621-netgear_r6260-squashfs-sysupgrade.bin'

  rm -Rf ~/'.ssh' && ping '192.168.1.1'

  del %UserProfile%"\.ssh\known_hosts" && ping -t "192.168.1.1"

===== Packages =====

  * [[https://openwrt.org/docs/guide-user/luci/luci.essentials|LuCI]] ((snapshot images don't include LuCI, so it needs installed on **every** clean snapshot install))

  ssh root@192.168.1.1

  sync && passwd

  opkg update && opkg install luci && sync

====== LuCI ======

  * http://192.168.1.1

===== DHCP =====

  * Network -> Interfaces -> LAN -> DHCP Server -> Limit

  48

===== DNS =====

==== Notes ====

  * This advertises an upstream DNS server directly to clients instead of the router
  * https://1.1.1.1/dns/
  * See [[notes:dns_servers|DNS servers]] for other DNS servers

==== IPv4 ====

  * Network -> Interfaces -> LAN -> DHCP Server -> Advanced Settings -> DHCP-Options
  * :!: The ''6,'' is intentional (([[https://old.reddit.com/r/openwrt/comments/hr6xig/how_to_set_openwrt_to_use_1111_dns_for_example/fylsewz/?context=3|Reddit]], [[https://datatracker.ietf.org/doc/html/rfc2132#section-3.8|RFC 2132]]))

<code>6,1.1.1.1,1.0.0.1</code>

=== IPs ===

<code>1.1.1.1</code>

<code>1.0.0.1</code>

==== IPv6 ====

  * Network -> Interfaces -> LAN -> DHCP Server -> Advanced Settings -> IPv6 Settings -> Announced IPv6 DNS servers

<code>2606:4700:4700::1111</code>
<code>2606:4700:4700::1001</code>

===== Wireless =====

==== 2.4GHz ====

  * Advanced Settings -> [x] Disable Inactivity Polling
  * Advanced Settings -> [ ] Disassociate On Low Acknowledgement

  * Country Code: US
  * Channel: 11
  * Width: 20 MHz
  * Encryption: WPA2-PSK CCMP AES

<code>The Crossroads (2.4GHz)</code>

==== 5GHz ====

  * :!: Advanced Settings -> [x] Disable Inactivity Polling
  * :!: Advanced Settings -> [ ] Disassociate On Low Acknowledgement
  * :!: These seem to fix 5GHz instability with a Chromecast

  * Country Code: US
  * :!: Channel: 149
  * Width: 80 MHz
  * Encryption: WPA2-PSK CCMP AES

<code>Highgate (5GHz)</code>

===== Firewall =====

  * See [[notes:port_forwards]]

====== Recovery ======

===== nmrpflash =====

  * https://github.com/jclehner/nmrpflash

  * Reason for the ''libpcap'' command: https://github.com/jclehner/nmrpflash/issues/27
  * :!: If using an OpenWRT image, use the ''factory'' image

  sudo ln -sv 'libpcap.so.1' '/usr/lib64/libpcap.so.0.8'

  sudo ~/'Downloads/nmrpflash-0.9.16-linux/nmrpflash' -L

  sudo ~/'Downloads/nmrpflash-0.9.16-linux/nmrpflash' -i 'enp6s0' -f ~/'Downloads/openwrt-ramips-mt7621-netgear_r6260-squashfs-factory.img'

  sudo ~/'Downloads/nmrpflash-0.9.16-linux/nmrpflash' -i 'enp6s0' -f ~/'Downloads/R6260-V1.1.0.84_1.0.1/R6260-V1.1.0.84_1.0.1.img'