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[Weaver]

• I think that the magic runes are to set the admin IP from the CLI are eg:
    lan config --ipaddr primary 192.168.4.1 255.255.255.0
  
  What are ‘primary’ and ‘secondary’ ? Just two addresses that you can associate with the port and that’s all there is to it?
• I notice there is a dhcpclient option too. Wow, so I could really make the modem controllable by an external DHCP server?
  
  If I were to use that then I could get the Firebrick to configure the modems automatically and so no having to keep their addresses straight.
• Would there then also be a configurable default IP address in the absence of a DHCP server?
• Could anyone else tell me if this is safe to at least try? (Given the grief I have had recovering a modem, though not always.) I didn’t dare try this in case I bricked it, but I would love to give it a go. I would have to work out how to do the Firebrick config first, with per-interface dhcp pools, for this to be any use.
• I tried the ‘dns’ command out too, could not get it to work, or maybe it doesn’t do what I hoped. I could not work out how to test it though. It appears to have taken effect, according to the lan show command’s output. I don’t think I could test it without getting a default route to the outside world going.
  
• I tried the route command but couldn’t get anywhere with it. I tried to work out how to route everything in the world to the Firebrick’s address on that link, 192.268.4.254 in the current case, where the modem is at 192.168.4.1, but error messages with everything I could think of. It really seemed to hate a netmask of 0.0.0.0, I think that was it, don’t know why.

[Weaver]

This modem currently shows:

lan show
br0       Link encap:Ethernet  HWaddr 04:BF:6D:3A:44:D0 
          inet addr:192.168.4.1  Bcast:192.168.4.255  Mask:255.255.255.0
          inet6 addr: fe80::6bf:6dff:fe3a:44d0/64 Scope:Link
          UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1508  Metric:1
          RX packets:3271 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3095 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:213015 (208.0 KiB)  TX bytes:813237 (794.1 KiB)

br0:0     Link encap:Ethernet  HWaddr 04:BF:6D:3A:44:D0 
          UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1508  Metric:1

Group Name      DNS Type
Default         Static(DNS Server : 192.168.4.254,0.0.0.0)

[johnson]

Be very careful, I just tried issuing this:

Code: [Select]

lan config --dhcpclient enable

To which it responded:

Code: [Select]

sshd:error:921.139:rutNtwk_getActiveDns6Ip:697:no ipv6Obj->IPv6DNSWANConnection found

sshd:error:921.152:rutNtwk_getActiveDns6Ip:717:fail to get dns6 server
=========== Setting success please wait 5 sec ===========
Config saved to flash.

Rebooted and my VMG1312 is now stuck in a boot loop... Will have a look what its saying on the console and get back to you.

[banger]

Be very careful, I just tried issuing this:

Code: [Select]

lan config --dhcpclient enable

To which it responded:

Code: [Select]

sshd:error:921.139:rutNtwk_getActiveDns6Ip:697:no ipv6Obj->IPv6DNSWANConnection found

sshd:error:921.152:rutNtwk_getActiveDns6Ip:717:fail to get dns6 server
=========== Setting success please wait 5 sec ===========
Config saved to flash.

Rebooted and my VMG1312 is now stuck in a boot loop... Will have a look what its saying on the console and get back to you.

Ooo errr, not good.

[johnson]

So the modem boots fine with no ethernet cables attached, but when you plug one in:

Code: [Select]

eth1 Link UP 100 mbps full duplex

ssk:error:91.569:rutNtwk_getActiveDns6Ip:697:no ipv6Obj->IPv6DNSWANConnection found

ssk:error:91.569:rutNtwk_getActiveDns6Ip:717:fail to get dns6 server
DHCP aquired LAN side IP address 192.168.x.x
smd:error:91.696:collectApp:1559:ssk (pid 260) exited due to uncaught signal number 11
smd:error:91.697:oal_processEvents:911:ssk has died.  smd must exit now!
Need to reboot
umount: tmpfs busy - remounted read-only

The system is going down NOW!

Sent SIGTERM to all processes

Sent SIGKILL to
Requesting system reboot
Restarting system.

So it appears the zyxel management stuff gets upset with a DHCP acquired address.

[johnson]

I have no problems changing the default IP address using:

Code: [Select]

lan config --ipaddr primary 192.168.1.x 255.255.255.0

Are you hoping to use the "dns" and "route" commands to give the modem internet access?

[Weaver]

Indeed.

Thanks for spotting that disaster! Good job I didn’t risk it.

They really do not believe in testing.