• NETGEAR R6260
• OpenWrt
• OpenWrt Device Page
• Snapshot

• 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

• ramips/mt7621

• factory.bin
• sysupgrade.bin

• 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'

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

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

• LuCI ¹⁾

ssh root@192.168.1.1

sync && passwd

opkg update && opkg install 'luci' && sync

• http://192.168.1.1

• https://www.albertogonzalez.net/how-to-reboot-nightly-your-openwrt-router/
• https://openwrt.org/docs/guide-user/base-system/cron#periodic_reboot

• http://192.168.1.1/cgi-bin/luci/admin/system/crontab

# Restart 5:00 AM
0 5 * * * sleep '70' && touch '/etc/banner' && reboot

• Network → Interfaces → LAN → DHCP Server → Limit

48

• 1.1.1.1 for Families, see dns_servers for other addresses
• This advertises an upstream DNS server directly to clients instead of the router

• Network → Interfaces → LAN → DHCP Server → Advanced Settings → DHCP-Options
• The 6, is intentional ²⁾

6,1.1.1.2,1.0.0.2

1.1.1.2

1.0.0.2

• Network → Interfaces → LAN → DHCP Server → Advanced Settings → IPv6 Settings → Announced IPv6 DNS servers

2606:4700:4700::1112

2606:4700:4700::1002

• See port_forwards

• 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'