[Solved] Please Help, Network Issues with compromised array

[Biggy2872]

Hello all,

Long time user, but I believe this is my first request for help... It's also been a while since I have posted.

 

I have been fighting this issue for a few days now and cannot for the life of me find a solution. Searching google and the forum have yielded no results.

 

The story:

Unraid 6.1.6

I had a data disk show up as red the other day.  I bought a new hard drive and replaced the disk (physically inside the computer).  I booted up the computer back up and now my eth0 interface won't get a good ip address via dhcp.  My syslog shows it getting a good ip(192.168.1.3) from my router(192.168.1.1) but then drops it in favour of a non-valid ip address(for my network, from 192.168.0.254 which does not exist on my network).  I have tried rebooting my router, using different ports on the router as well as multiple cables.  I even purchased a new pci Ethernet card with the same result. The last reboot, a few weeks ago, was without any issue.

 

Syslog attached.

 

these lines stand out to me:

Apr 21 17:47:27 server dhcpcd[1417]: eth0: sending DISCOVER (xid 0xaa5107c2), next in 4.0 seconds

Apr 21 17:47:27 server dhcpcd[1417]: eth0: offered 192.168.1.3 from 192.168.1.1

Apr 21 17:47:27 server dhcpcd[1417]: eth0: sending REQUEST (xid 0xaa5107c2), next in 3.2 seconds

Apr 21 17:47:27 server dhcpcd[1417]: eth0: acknowledged 192.168.1.3 from 192.168.1.1

Apr 21 17:47:27 server dhcpcd[1417]: eth0: probing for 192.168.1.3

Apr 21 17:47:27 server dhcpcd[1417]: eth0: ARP probing 192.168.1.3 (1 of 3), next in 1.7 seconds

Apr 21 17:47:29 server dhcpcd[1417]: eth0: ARP probing 192.168.1.3 (2 of 3), next in 1.8 seconds

Apr 21 17:47:29 server dhcpcd[1417]: eth0: ignoring offer of 192.168.0.103 from 192.168.0.254

Apr 21 17:47:29 server dhcpcd[1417]: eth0: ignoring offer of 192.168.0.103 from 192.168.0.254

Apr 21 17:47:29 server dhcpcd[1417]: eth0: NAK: from 192.168.0.254

Apr 21 17:47:29 server dhcpcd[1417]: eth0: executing `/lib/dhcpcd/dhcpcd-run-hooks' NAK

Apr 21 17:47:29 server dhcpcd[1417]: eth0: soliciting a DHCP lease

Apr 21 17:47:29 server dhcpcd[1417]: eth0: sending DISCOVER (xid 0xcebf097), next in 3.2 seconds

Apr 21 17:47:29 server dhcpcd[1417]: eth0: offered 192.168.0.103 from 192.168.0.254

Apr 21 17:47:29 server dhcpcd[1417]: eth0: sending REQUEST (xid 0xcebf097), next in 3.9 seconds

Apr 21 17:47:29 server dhcpcd[1417]: eth0: ignoring offer of 192.168.0.103 from 192.168.0.254

Apr 21 17:47:29 server dhcpcd[1417]: eth0: acknowledged 192.168.0.103 from 192.168.0.254

Apr 21 17:47:29 server dhcpcd[1417]: eth0: probing for 192.168.0.103

Apr 21 17:47:29 server dhcpcd[1417]: eth0: ARP probing 192.168.0.103 (1 of 3), next in 1.7 seconds

Apr 21 17:47:29 server dhcpcd[1417]: eth0: ignoring offer of 192.168.1.3 from 192.168.1.1

Apr 21 17:47:31 server dhcpcd[1417]: eth0: ARP probing 192.168.0.103 (2 of 3), next in 1.1 seconds

Apr 21 17:47:31 server dhcpcd[1417]: eth0: ARP probing 192.168.1.3 (3 of 3), next in 2.0 seconds

Apr 21 17:47:32 server dhcpcd[1417]: eth0: ARP probing 192.168.0.103 (3 of 3), next in 2.0 seconds

Apr 21 17:47:33 server dhcpcd[1417]: eth0: leased 192.168.0.103 for 60 seconds

Apr 21 17:47:33 server dhcpcd[1417]: eth0: renew in 30 seconds, rebind in 52 seconds

Apr 21 17:47:33 server dhcpcd[1417]: eth0: writing lease `/var/lib/dhcpcd/dhcpcd-eth0.lease'

Apr 21 17:47:33 server dhcpcd[1417]: eth0: adding IP address 192.168.0.103/24

Apr 21 17:47:33 server dhcpcd[1417]: eth0: adding route to 192.168.0.0/24

Apr 21 17:47:33 server dhcpcd[1417]: eth0: adding default route via 192.168.0.254

Apr 21 17:47:33 server dhcpcd[1417]: eth0: executing `/lib/dhcpcd/dhcpcd-run-hooks' BOUND

Apr 21 17:47:33 server dhcpcd[1417]: forking to background

Apr 21 17:47:33 server dhcpcd[1464]: eth0: ARP announcing 192.168.1.3 (1 of 2), next in 2.0 seconds

Apr 21 17:47:33 server dhcpcd[1417]: forked to background, child pid 1464

 

Can someone please provide some assistance in helping me resolve this issue? Thank you in advance.

syslog20160421.txt

[ashman70]

It looks like you have another device on your network at 192.168.0.254 that is acting as a DHCP server and trying to hand out an IP to your UnRaid server (192.168.0.103)

I would find this device and either get it off your network or turn off the DHCP server on it. You should be able to connect to it via a web browser at 192.168.0.254

Have you put any new devices on your network, all in one printer wireless router?

[Biggy2872]

Thank you very much ashman70.  It was indeed another device on the network.  A TP-Link wireless repeater.  Weird, it has never caused an issue before.