How to test for ethernet hardware failure

jlconlin · March 5, 2024, 4:15am

Okay. I'm starting over. I did:

Reset the router to default settings
Changed the wan and wan6 to point to lan1
Enabled wifi (2.4 GHz and 5.2 GHz)

All of my smart devices at home can see the wifi. Nothing can see the internet while connected to wifi.

My laptop can get to the internet if I turn off wifi and connect via ethernet to the router. But I get a WAN IP address, not a 192.168.xxx.xxx address. I'm guessing I'm not pointing to things in the right way and I don't know what's wrong.

Since I know you are going to ask:

root@OpenWrt:~# ubus call system board
{
	"kernel": "5.15.134",
	"hostname": "OpenWrt",
	"system": "ARMv8 Processor rev 4",
	"model": "Linksys E8450 (UBI)",
	"board_name": "linksys,e8450-ubi",
	"rootfs_type": "squashfs",
	"release": {
		"distribution": "OpenWrt",
		"version": "23.05.0",
		"revision": "r23497-6637af95aa",
		"target": "mediatek/mt7622",
		"description": "OpenWrt 23.05.0 r23497-6637af95aa"
	}
}
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 'fd04:386e:5b77::/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 interface 'wan'
	option device 'lan1'
	option proto 'dhcp'

config interface 'wan6'
	option device 'lan1'
	option proto 'dhcpv6'
	option reqaddress 'try'
	option reqprefix 'auto'

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

config wifi-device 'radio0'
	option type 'mac80211'
	option path 'platform/18000000.wmac'
	option channel '1'
	option band '2g'
	option htmode 'HT20'
	option cell_density '0'

config wifi-iface 'default_radio0'
	option device 'radio0'
	option network 'lan'
	option mode 'ap'
	option ssid 'AnnArbor'
	option encryption 'sae-mixed'
	option key 'Northwood5'

config wifi-device 'radio1'
	option type 'mac80211'
	option path '1a143000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0'
	option channel '36'
	option band '5g'
	option htmode 'HE80'
	option cell_density '0'

config wifi-iface 'default_radio1'
	option device 'radio1'
	option network 'lan'
	option mode 'ap'
	option ssid 'AnnArbor'
	option encryption 'sae-mixed'
	option key 'Northwood5'

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

config dnsmasq
	option domainneeded '1'
	option boguspriv '1'
	option filterwin2k '0'
	option localise_queries '1'
	option rebind_protection '1'
	option rebind_localhost '1'
	option local '/lan/'
	option domain 'lan'
	option expandhosts '1'
	option nonegcache '0'
	option cachesize '1000'
	option authoritative '1'
	option readethers '1'
	option leasefile '/tmp/dhcp.leases'
	option resolvfile '/tmp/resolv.conf.d/resolv.conf.auto'
	option nonwildcard '1'
	option localservice '1'
	option ednspacket_max '1232'
	option filter_aaaa '0'
	option filter_a '0'

config dhcp 'lan'
	option interface 'lan'
	option start '100'
	option limit '150'
	option leasetime '12h'
	option dhcpv4 'server'
	option dhcpv6 'server'
	option ra 'server'
	option ra_slaac '1'
	list ra_flags 'managed-config'
	list ra_flags 'other-config'

config dhcp 'wan'
	option interface 'wan'
	option ignore '1'

config odhcpd 'odhcpd'
	option maindhcp '0'
	option leasefile '/tmp/hosts/odhcpd'
	option leasetrigger '/usr/sbin/odhcpd-update'
	option loglevel '4'

root@OpenWrt:~# cat /etc/config/firewall
config defaults
	option syn_flood	1
	option input		REJECT
	option output		ACCEPT
	option forward		REJECT
# Uncomment this line to disable ipv6 rules
#	option disable_ipv6	1

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

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

config forwarding
	option src		lan
	option dest		wan

# We need to accept udp packets on port 68,
# see https://dev.openwrt.org/ticket/4108
config rule
	option name		Allow-DHCP-Renew
	option src		wan
	option proto		udp
	option dest_port	68
	option target		ACCEPT
	option family		ipv4

# Allow IPv4 ping
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

# Allow DHCPv6 replies
# see https://github.com/openwrt/openwrt/issues/5066
config rule
	option name		Allow-DHCPv6
	option src		wan
	option proto		udp
	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

# Allow essential incoming IPv6 ICMP traffic
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

# Allow essential forwarded IPv6 ICMP traffic
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


### EXAMPLE CONFIG SECTIONS
# do not allow a specific ip to access wan
#config rule
#	option src		lan
#	option src_ip	192.168.45.2
#	option dest		wan
#	option proto	tcp
#	option target	REJECT

# block a specific mac on wan
#config rule
#	option dest		wan
#	option src_mac	...66
#	option target	REJECT

# block incoming ICMP traffic on a zone
#config rule
#	option src		lan
#	option proto	ICMP
#	option target	DROP

# port redirect port coming in on wan to lan
#config redirect
#	option src			wan
#	option src_dport	80
#	option dest			lan
#	option dest_ip		192.168.16.235
#	option dest_port	80
#	option proto		tcp

# port redirect of remapped ssh port (22001) on wan
#config redirect
#	option src		wan
#	option src_dport	22001
#	option dest		lan
#	option dest_port	22
#	option proto		tcp

### FULL CONFIG SECTIONS
#config rule
#	option src		lan
#	option src_ip	192.168.45.2
#	option src_mac	...55
#	option src_port	80
#	option dest		wan
#	option dest_ip	194.25.2.129
#	option dest_port	120
#	option proto	tcp
#	option target	REJECT

#config redirect
#	option src		lan
#	option src_ip	192.168.45.2
#	option src_mac	...55
#	option src_port		1024
#	option src_dport	80
#	option dest_ip	194.25.2.129
#	option dest_port	120
#	option proto	tcp

Thanks again for your continued help.

LilRedDog · March 5, 2024, 4:22am

Right now you have lan1 in both lan and wan. Get it out of lan.

jlconlin · March 5, 2024, 12:52pm

I removed lan1 from br-lan and rebooted. Alas, no internet via wifi. Now I can't get internet when connected via ethernet to the router, only directly to the modem.

I think the router may be worse off hardware wise than originally thought.

LilRedDog · March 5, 2024, 1:03pm

Sorry about that.
Is the modem a router too?

Because you need a firewall and the Linksys is not working.

This thread has come to as close to agreeing the GL.iNet MT-3000 is the reasonably priced router without breaking a wallet.

In the drop down in devices does lan1 have any options we have missed?

richb-hanover-priv · March 5, 2024, 1:27pm

@daniel - is this problem related to the discussion currently going on at Belkin RT3200/Linksys E8450 WiFi AX discussion ? Thanks.

LilRedDog · March 5, 2024, 1:48pm

Wow! That thread is all over the place but no. @jlconlin lost eth0 physically and I was hoping we could pull a lan port, put in in wan and use it as a wan port.

My nighthawk allows this kind of stuff but, apparently, the 8450 wont do it.

jlconlin · March 5, 2024, 1:58pm

No it isn't. I 'm going to borrow one from a friend until I can determine which one is best to buy.

daniel · March 6, 2024, 3:05pm

Also on the E8450 the difference of LAN and WAN ports is really just the label printed on the device and used as interface name in device tree and how software deals with it. Ie. you can just change /etc/config/network and use any of the lan ports as wan port.

LilRedDog · March 6, 2024, 3:09pm

I thought that was true most of the time.
I tried everything I could think of but I just failed to talk them through it.

jlconlin · March 6, 2024, 3:19pm

Thanks for your help @LilRedDog. I did try to follow your suggestions; they seemed reasonable. I feel like there was just one little setting that needed to be made, but couldn't figure out what that would be.

I am borrowing a router for the moment and will buy a new one in the next week or two.

LilRedDog · March 6, 2024, 3:28pm

No doubt.
I know it is something like its not in the firewall correctly or something just as simple.

Do get a bunch of new surge protectors; they are only good for a couple of years depending on grid quality and one for any copper your ISP uses to your modem, if you can find one.