Freenas dropping network with strange error

[rentahippie]

I am seeing my Freenas dropping off the network many times during the day. I see this error on the FreeNas

kernel: arp:00:11:22:ab:cd:ee is using my IP address 10.0.0.252 on em0!

This the IP address of FREENAS for many year.

This started with that last update on Freenas 11.2 update 6

Anyone have any idea how to fix this?

 

[Elliot Dierksen]

You either have a loop in your network or something else is using the IP address of your FreeNAS. A helpful tool when chasing unknown ethernet devices is the Wireshark OUI lookup https://www.wireshark.org/tools/oui-lookup.html. MAC addresses are purchased by manufacturers, so you can have some idea what it is by looking that up. In your case, the result is

Code:

00:11:22 Cimsys    CIMSYS Inc

. Does that sound like anything on your network? Also, please include your hardware configuration.

 

[rentahippie]

So I change to Freenas 11.2 update 5 and rebooted and I not had a single problem today.
no hardware has been turned off or disconnected from network either.
I will wait a few days and see if anything happens.

 

[Pitts]

I have a similar problem on FreeNAS-11.2-U4.1

Code:

Oct  6 18:59:47 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 18:59:47 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 18:59:49 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 18:59:49 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:14 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:14 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:15 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:15 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:17 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:17 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:19 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:19 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:24 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:24 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:48 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:00:48 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:01:19 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:01:19 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:02:20 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:02:20 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:03:24 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:03:24 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:04:28 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:04:28 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:05:32 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!
Oct  6 23:05:32 freenas kernel: arp: 00:11:22:ab:cd:ee is using my IP address 192.168.1.246 on epair0b!

Sometimes it stops for hours/days ... Not sure why yet

I updated Freenas at the same time I changed router but I don't see any reason for a conflict. That MAC address seems bogus anyway (012abcde).
I'll check my network some more

 

[rentahippie]

two days now after I changed back to update 5 and no problem. There is a bug in Update 6 I will remove update 5 it is good Update 6 is bad. I believe

 

[rentahippie]

It happening again. I have no idea what is going on. It has been good all week and now it starting again.
anyone has any clues is my hardware going bad?

 

[rentahippie]

It seem to be my network switch failing I replaced it with a different 48 port switch and then problem has not happen in 1 week now. I even updated back to 06 update