ip confusion

[jimmer]

I have the router configured to DHCP 192.168.0.20-100
router 192.168.0.1
addresses between 192.168.0.2-19 manually configured
the router however keeps assigning ip addresses to clients in the manual range which then don't connect to the internet
this even happens for clients that have manual ip address assigned by mac address
any idea how to change this?
current firmware 380.57 RT-N66W

 

[ColinTaylor]

This sounds very much like you have another device on your LAN which is acting as a DHCP server.

Check one of the clients that can't connect to the internet and see what gateway address it is using.

 

[jimmer]

This sounds very much like you have another device on your LAN which is acting as a DHCP server.

Check one of the clients that can't connect to the internet and see what gateway address it is using.

can't find any
while there is another cable modem/router (TWC UBEE DDW365) on the network it is set with DHCP/NAT disabled
I've run DHCP explorer on a client computer and no other servers seen
unfortunately the clients getting the bad ip addresses are devices like Kindles that there is no way to see what gateway they are connecting to

 

[ColinTaylor]

Look in the routers syslog. Can you see the DHCP requests from the devices in question? What IP addresses are they being assigned in the syslog?

 

[jimmer]

Look in the routers syslog. Can you see the DHCP requests from the devices in question? What IP addresses are they being assigned in the syslog?

sys log entry

Apr 3 17:06:05 dnsmasq-dhcp[515]: not giving name kindlej to the DHCP lease of 192.168.0.18 because the name exists in /etc/hosts.dnsmasq with address 192.168.0.5

this was after I had to manually assign ip address 192.168.0.18 to the kindle since it couldn't see internet

i have since reassigned it manually to the 192.168.0.5 address which was supposedly unused
regardless that address is outside of the DHCP range
am I doing something wrong by manually assigning ip addresses from the LAN>DHCP tab??
can't find anywhere else to do it

 

[john9527]

Don't specify any address in your Kindle....tell it to use DHCP (obtain address automatically, or some such words....I don't have a Kindle)

 

[ColinTaylor]

i have since reassigned it manually to the 192.168.0.5 address which was supposedly unused
regardless that address is outside of the DHCP range
am I doing something wrong by manually assigning ip addresses from the LAN>DHCP tab??

You should be using an address inside the DHCP range for manual assignments. Try changing the assignment to something like 192.168.0.30 and setting the kindle to use DHCP. Then reboot everything.