Can't access router after reset

Installing and Using OpenWrt
1

Hi!

I've got a Dynalink DL-WRX36 router and I can access it neither via SSH nor Luci after doing a reset using the physical reset button.

I have now connected to the router via serial access and see that:

  • "netstat -tulpn" shows dropbear is active on port 22
  • "ip addr" lists 192.168.1.1 as an assigned IP address and yet I can't connect to this address from another PC via LAN cable
  • when I connect the LAN cable, OpenWRT shows: "entered blocking state" followed by "entered forwarding state"

Any ideas why the router is unreachable?

Thank you!

2

Does your device get issued an IP via DHCP?

Are you connecting to the LAN port?

Do you get some kind of error, or what?

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3

Can you logon using serial ?

4

FYI, the OP noted:

5

No, "ip addr" on my PC doesn't show any IP.

Yes! And I have tried all LAN ports.

Yes!

ssh: connect to host 192.168.1.1 port 22: Network is unreachable
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6

Not what I asked though, but I guess all those commands where run from serial cli.

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7

Well, that's an issue, agreed?

This proves it - you don't have a valid IP issued to you client.

What is the output of the following commands:

ubus call system board
cat /etc/config/network
cat /etc/config/dhcp

My bad, I misunderstood your inquiry.

8

Not sure if I understand. I am "root" when I am connected using serial.

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9

Oh no, you reminded me that I had previously used this router as an access point and removed things such as dhcp. :scream_cat: I thought that the hard reset puts everything back to its original state, for example enables dhcp...

$ ubus call system board
{
        "kernel": "5.15.105",
        "hostname": "OpenWrt",
        "system": "ARMv8 Processor rev 4",
        "model": "Dynalink DL-WRX36",
        "board_name": "dynalink,dl-wrx36",
        "rootfs_type": "squashfs",
        "release": {
                "distribution": "OpenWrt",
                "version": "SNAPSHOT",
                "revision": "r22506-9a62b3977f",
                "target": "ipq807x/generic",
                "description": "OpenWrt SNAPSHOT r22506-9a62b3977f"
        }
}

$ 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 'fd6a:28ca:702c::/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 'wan'
        option proto 'dhcp'

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

$ cat /etc/config/dhcp
cat: can't open '/etc/config/dhcp': No such file or directory

Ehm, I'll go and install dhcp. That's really awkward... I thought a hard reset takes care of that. Sorry!

Will get back if I need help.

1 Like
10

So you made a custom firmware without dnsmasq (i.e the DHCPv4 server), etc.?

Not if the [custom] firmware you flashed never had it.

:spiral_notepad: BTW - SNAPSHOTS do not include LuCI by default either.

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11

Thanks for your help! Router is up and running and I learnt lots in the process. :slight_smile:

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12

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