Router connected with USB tether but wifi not working

abadacus · June 30, 2022, 12:12pm

Hello team,

I've successfully enabled USB tethering on my router and the router is connected to the internet (ping/updates successful) however when I try to broadcast wifi:

My personal phone Note 10+ (different to the tethered phone) states "couldn't get an IP address"
My PC and other phones can connect to the network however there is no internet coming through

Have searched but don't seem to be able to find anyone with similar issues. Am looking to create my first network but very novice when it comes to things like this so I don't really have any idea what I'm doing so any assistance would be much appreciated!

frollic · June 30, 2022, 12:14pm

post your /etc/config/network

abadacus · June 30, 2022, 12:19pm

Do you have a link with instructions on how to show these?

frollic · June 30, 2022, 12:20pm

winscp to the router, edit/view the file.
or ssh to it, and run cat /etc/config/network

abadacus · June 30, 2022, 12:22pm

Ah thank you

root@OpenWrt:~# cat /etc/config/network

config interface 'loopback'
        option device 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fd29:cfba:02e7::/48'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'lan1'
        list ports 'lan2'
        list ports 'lan3'
        list ports 'lan4'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option ipaddr '192.168.1.1'
        option netmask '255.255.255.0'
        option ip6assign '60'

config device
        option name 'wan'
        option macaddr 'c2:56:27:b9:68:61'

config interface 'wan'
        option device 'wan'
        option proto 'dhcp'
        option ifname 'usb0'

config interface 'wan6'
        option device 'wan'
        option proto 'dhcpv6'
        option ifname 'usb0'

config interface 'wwan'
        option proto 'dhcp'

config interface 'USBTether'
        option proto 'dhcp'
        option device 'usb0

frollic · June 30, 2022, 12:25pm

post your /etc/config/firewall too.

abadacus · June 30, 2022, 12:28pm

root@OpenWrt:~# cat /etc/config/firewall

config defaults
        option output 'ACCEPT'
        option forward 'REJECT'
        option synflood_protect '1'
        option input 'REJECT'

config zone
        option name 'lan'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'ACCEPT'
        list network 'lan'
        list network 'wan'
        list network 'wan6'
        list network 'wwan'

config zone
        option name 'wan'
        option input 'REJECT'
        option output 'ACCEPT'
        option masq '1'
        option mtu_fix '1'
        option forward 'ACCEPT'
        list network 'USBTether'
        list network 'wan'
        list network 'wan6'
        list network 'wwan'

config forwarding
        option src 'lan'
        option dest 'wan'

config rule
        option name 'Allow-DHCP-Renew'
        option src 'wan'
        option proto 'udp'
        option dest_port '68'
        option target 'ACCEPT'
        option family 'ipv4'

config rule
        option name 'Allow-Ping'
        option src 'wan'
        option proto 'icmp'
        option icmp_type 'echo-request'
        option family 'ipv4'
        option target 'ACCEPT'

config rule
        option name 'Allow-IGMP'
        option src 'wan'
        option proto 'igmp'
        option family 'ipv4'
        option target 'ACCEPT'

config rule
        option name 'Allow-DHCPv6'
        option src 'wan'
        option proto 'udp'
        option src_ip 'fc00::/6'
        option dest_ip 'fc00::/6'
        option dest_port '546'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-MLD'
        option src 'wan'
        option proto 'icmp'
        option src_ip 'fe80::/10'
        list icmp_type '130/0'
        list icmp_type '131/0'
        list icmp_type '132/0'
        list icmp_type '143/0'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-ICMPv6-Input'
        option src 'wan'
        option proto 'icmp'
        list icmp_type 'echo-request'
        list icmp_type 'echo-reply'
        list icmp_type 'destination-unreachable'
        list icmp_type 'packet-too-big'
        list icmp_type 'time-exceeded'
        list icmp_type 'bad-header'
        list icmp_type 'unknown-header-type'
        list icmp_type 'router-solicitation'
        list icmp_type 'neighbour-solicitation'
        list icmp_type 'router-advertisement'
        list icmp_type 'neighbour-advertisement'
        option limit '1000/sec'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-ICMPv6-Forward'
        option src 'wan'
        option dest '*'
        option proto 'icmp'
        list icmp_type 'echo-request'
        list icmp_type 'echo-reply'
        list icmp_type 'destination-unreachable'
        list icmp_type 'packet-too-big'
        list icmp_type 'time-exceeded'
        list icmp_type 'bad-header'
        list icmp_type 'unknown-header-type'
        option limit '1000/sec'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-IPSec-ESP'
        option src 'wan'
        option dest 'lan'
        option proto 'esp'
        option target 'ACCEPT'

config rule
        option name 'Allow-ISAKMP'
        option src 'wan'
        option dest 'lan'
        option dest_port '500'
        option proto 'udp'
        option target 'ACCEPT'

config rule
        option name 'Support-UDP-Traceroute'
        option src 'wan'
        option dest_port '33434:33689'
        option proto 'udp'
        option family 'ipv4'
        option target 'REJECT'
        option enabled 'false'

config include
        option path '/etc/firewall.user'

root@OpenWrt:~#         option netmask '255.255.255.0'

These settings were copied from the guide linked here, configured through LUCI:

abadacus · June 30, 2022, 12:31pm

my personal phone (note 10+) which cannot get an IP address suggests setting a shorter IP address lease time in the router's DHCP if that helps?

frollic · June 30, 2022, 12:33pm

abadacus:

config zone
        option name 'lan'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'ACCEPT'
        list network 'lan'
        list network 'wan'
        list network 'wan6'
        list network 'wwan'

this looks weird ...remove all the w*

mk24 · June 30, 2022, 12:34pm

Remove everything about USBtether you don't need it. Make usb0 the device of the wan network instead of wan, which is the wan Ethernet port. That port will go unused for now. Remove the option ifname from network interfaces, that is the deprecated old syntax.

Edit: and what @frollic said, the lan firewall zone should just be lan. The wan firewall zone should be wan (and wan6 if you want to try to use IPv6). In other words default configuration. Resetting the whole router to defaults and starting over is also viable if you have access to a wired network to readily re-install the USB tether drivers.

At this point you should have Internet on your PC wired to the LAN port. If you start up a wifi AP attached to the lan network, it should also work.

abadacus · June 30, 2022, 12:40pm

Done, removed from lan firewall setting
Still doesn't want to connect. Should I be restarting after changes?

root@OpenWrt:~# cat /etc/config/firewall

config defaults
        option output 'ACCEPT'
        option forward 'REJECT'
        option synflood_protect '1'
        option input 'REJECT'

config zone
        option name 'lan'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'ACCEPT'
        list network 'lan'

config zone
        option name 'wan'
        option input 'REJECT'
        option output 'ACCEPT'
        option masq '1'
        option mtu_fix '1'
        option forward 'ACCEPT'
        list network 'USBTether'
        list network 'wan'
        list network 'wan6'
        list network 'wwan'

config forwarding
        option src 'lan'
        option dest 'wan'

config rule
        option name 'Allow-DHCP-Renew'
        option src 'wan'
        option proto 'udp'
        option dest_port '68'
        option target 'ACCEPT'
        option family 'ipv4'

config rule
        option name 'Allow-Ping'
        option src 'wan'
        option proto 'icmp'
        option icmp_type 'echo-request'
        option family 'ipv4'
        option target 'ACCEPT'

config rule
        option name 'Allow-IGMP'
        option src 'wan'
        option proto 'igmp'
        option family 'ipv4'
        option target 'ACCEPT'

config rule
        option name 'Allow-DHCPv6'
        option src 'wan'
        option proto 'udp'
        option src_ip 'fc00::/6'
        option dest_ip 'fc00::/6'
        option dest_port '546'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-MLD'
        option src 'wan'
        option proto 'icmp'
        option src_ip 'fe80::/10'
        list icmp_type '130/0'
        list icmp_type '131/0'
        list icmp_type '132/0'
        list icmp_type '143/0'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-ICMPv6-Input'
        option src 'wan'
        option proto 'icmp'
        list icmp_type 'echo-request'
        list icmp_type 'echo-reply'
        list icmp_type 'destination-unreachable'
        list icmp_type 'packet-too-big'
        list icmp_type 'time-exceeded'
        list icmp_type 'bad-header'
        list icmp_type 'unknown-header-type'
        list icmp_type 'router-solicitation'
        list icmp_type 'neighbour-solicitation'
        list icmp_type 'router-advertisement'
        list icmp_type 'neighbour-advertisement'
        option limit '1000/sec'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-ICMPv6-Forward'
        option src 'wan'
        option dest '*'
        option proto 'icmp'
        list icmp_type 'echo-request'
        list icmp_type 'echo-reply'
        list icmp_type 'destination-unreachable'
        list icmp_type 'packet-too-big'
        list icmp_type 'time-exceeded'
        list icmp_type 'bad-header'
        list icmp_type 'unknown-header-type'
        option limit '1000/sec'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-IPSec-ESP'
        option src 'wan'
        option dest 'lan'
        option proto 'esp'
        option target 'ACCEPT'

config rule
        option name 'Allow-ISAKMP'
        option src 'wan'
        option dest 'lan'
        option dest_port '500'
        option proto 'udp'
        option target 'ACCEPT'

config rule
        option name 'Support-UDP-Traceroute'
        option src 'wan'
        option dest_port '33434:33689'
        option proto 'udp'
        option family 'ipv4'
        option target 'REJECT'
        option enabled 'false'

config include
        option path '/etc/firewall.user'

frollic · June 30, 2022, 12:46pm

never hurts to restart.

if it doesn't work, reset, as @mk24 said.

mk24 · June 30, 2022, 12:49pm

Yes I'd do that:

Reset to defaults
Connect to Internet and install USB tether drivers
Connect smartphone and turn on tethering, confirm usb0 is created
Change wan & wan6 network interface device to usb0
Configure wifi AP on lan

abadacus · June 30, 2022, 1:04pm

Thanks guys, I might try the reset. Do you have a link with instructions to * Change wan & wan6 network interface device to usb0?

frollic · June 30, 2022, 1:06pm

they're in the wiki your posted yourself

abadacus · June 30, 2022, 1:18pm

Ah! seen..

Changed both to usb0, rebooted router but still not working.
Why would the wiki recommend creating a new interface if changing device could possibly have been the solution to my issue?

Anyway, will reset and see where that gets me.

root@OpenWrt:~# cat /etc/config/network

config interface 'loopback'
        option device 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fd29:cfba:02e7::/48'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'lan1'
        list ports 'lan2'
        list ports 'lan3'
        list ports 'lan4'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option ipaddr '192.168.1.1'
        option netmask '255.255.255.0'
        option ip6assign '60'

config device
        option name 'wan'
        option macaddr 'c2:56:27:b9:68:61'

config interface 'wan'
        option proto 'dhcp'
        option ifname 'usb0'
        option device 'usb0'

config interface 'wan6'
        option proto 'dhcpv6'
        option ifname 'usb0'
        option device 'usb0'
        option reqaddress 'try'
        option reqprefix 'auto'

config interface 'wwan'
        option proto 'dhcp'

config interface 'USBTether'
        option proto 'dhcp'
        option device 'usb0'

frollic · June 30, 2022, 1:27pm

if you keep the original wan, as it is, it could be used for a wired internet connection, in parallell, or the cell phone wan as fail over.

mk24 · June 30, 2022, 2:57pm

You did not delete the USBTether interface or remove the option ifname lines though.

abadacus · June 30, 2022, 3:23pm

Thanks guys, the reset worked and am using my new wireless network to type this.
Changed the device of wan and wan6 to usb0 after installing the tethering packages.

system · July 10, 2022, 3:24pm

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