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Home » GFI User Forums » Kerio Control » Kerio reporting frequent MAC address changes
Kerio reporting frequent MAC address changes [message #112962] Sat, 26 April 2014 20:23 Go to next message
TheFirewallGuy is currently offline  TheFirewallGuy
Messages: 14
Registered: February 2014
I just upgraded to Kerio Control 8.3.0 and when I look in the "Hosts" log, I see the following 2 entries repeated every 5 - 30 seconds:

[26/Apr/2014 14:13:17] [IPv4] X.X.X.X [MAC] YY-YY-YY-YY-YY-01 (Company Name 1) [Hostname] MyPC - MAC address changed from YY-YY-YY-YY-YY-02

[26/Apr/2014 14:13:33] [IPv4] X.X.X.X [MAC] YY-YY-YY-YY-YY-02 (Company Name 2) [Hostname] MyPC - MAC address changed from YY-YY-YY-YY-YY-01

The IPv4 address and Hostname are always the same (and correct for MyPC which located on the local trusted network). MAC address YY-YY-YY-YY-YY-01 is the correct one for MyPC and YY-YY-YY-YY-YY-02 is the MAC address of the Internet Interface on the Kerio Control Machine (which is a dedicated machine running the Software Appliance).

Any ideas why this is happening? I have some outside traffic that gets forwarded to MyPC and that DOES appear to be working.
Re: Kerio reporting frequent MAC address changes [message #112963 is a reply to message #112962] Sat, 26 April 2014 21:10 Go to previous messageGo to next message
TheFirewallGuy is currently offline  TheFirewallGuy
Messages: 14
Registered: February 2014
Update: I now have a different computer on the network that is logging a MAC address change from its actual MAC address to the same Internet Interface MAC address mentioned above. The original computer mentioned above is also still report the same MAC address changes (every 5-30 seconds). The new additional computer doesn't seem to do it as often.
Re: Kerio reporting frequent MAC address changes [message #113270 is a reply to message #112963] Fri, 09 May 2014 04:15 Go to previous messageGo to next message
TheFirewallGuy is currently offline  TheFirewallGuy
Messages: 14
Registered: February 2014
So no one else sees this same issue??? The "Hosts" log would actually be very useful if it wasn't for all of these excessive MAC address change log entries.
Re: Kerio reporting frequent MAC address changes [message #113285 is a reply to message #112962] Fri, 09 May 2014 12:53 Go to previous messageGo to next message
rjokl is currently offline  rjokl
Messages: 62
Registered: August 2005
Will be fixed in Control 8.3.1 soon.

Regards,
Roman Jokl
Re: Kerio reporting frequent MAC address changes [message #113300 is a reply to message #113285] Fri, 09 May 2014 21:45 Go to previous messageGo to next message
TheFirewallGuy is currently offline  TheFirewallGuy
Messages: 14
Registered: February 2014
Thanks for the feedback.
Re: Kerio reporting frequent MAC address changes [message #115296 is a reply to message #113300] Wed, 06 August 2014 05:34 Go to previous messageGo to next message
gskibum is currently offline  gskibum
Messages: 60
Registered: October 2011
I have Kerio Control 8.3.3 and my Host log file is flooded with these messages.
Re: Kerio reporting frequent MAC address changes [message #115309 is a reply to message #115296] Wed, 06 August 2014 17:14 Go to previous messageGo to next message
TheFirewallGuy is currently offline  TheFirewallGuy
Messages: 14
Registered: February 2014
Version 8.3.1 did fix the problem for me. I am currently running 8.3.3 and the Host log still appears to be behaving/logging normally.
Re: Kerio reporting frequent MAC address changes [message #116164 is a reply to message #112962] Thu, 18 September 2014 13:25 Go to previous messageGo to next message
surjikoff is currently offline  surjikoff
Messages: 3
Registered: September 2014
Location: Moscow
version 8.3.4 build 2461 spam spam spam... How stop it?
in DC Server 2012 R2 with 2 net adapter with NIC Teaming

[18/Sep/2014 14:50:21] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ac (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ab
[18/Sep/2014 14:50:21] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ab (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ac
[18/Sep/2014 14:50:23] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ac (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ab
[18/Sep/2014 14:50:24] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ab (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ac
[18/Sep/2014 14:50:25] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ac (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ab
[18/Sep/2014 14:50:26] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ab (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ac
[18/Sep/2014 14:50:28] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ac (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ab
[18/Sep/2014 14:50:29] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ab (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ac
[18/Sep/2014 14:50:29] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ac (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ab
[18/Sep/2014 14:50:30] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ab (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ac
[18/Sep/2014 14:50:30] [IPv4] 192.168.1.2 [MAC] 00-1e-67-ac-bf-ac (Intel Corporate) [Hostname] dc.loc [User] DC - MAC address changed from 00-1e-67-ac-bf-ab
Re: Kerio reporting frequent MAC address changes [message #116167 is a reply to message #116164] Thu, 18 September 2014 16:01 Go to previous messageGo to next message
gskibum is currently offline  gskibum
Messages: 60
Registered: October 2011
Yep I also still have this with 8.3.4.
Re: Kerio reporting frequent MAC address changes [message #116670 is a reply to message #116167] Tue, 14 October 2014 10:26 Go to previous messageGo to next message
SergKLP is currently offline  SergKLP
Messages: 2
Registered: October 2014
The same problem for me with Kerio Control 8.3.4 clean install.
Re: Kerio reporting frequent MAC address changes [message #116833 is a reply to message #112962] Mon, 20 October 2014 10:46 Go to previous messageGo to next message
surjikoff is currently offline  surjikoff
Messages: 3
Registered: September 2014
Location: Moscow
Solved! Smile But first, answer from support - Turn off NIC Teaming. lol

Install Hyper-V, in nic teaming setting (load balancing mode) select hyper-v port it's work ok. In net adapner hyper-v setting, change mac address if you need.

[Updated on: Mon, 20 October 2014 10:50]

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Re: Kerio reporting frequent MAC address changes [message #116834 is a reply to message #112962] Mon, 20 October 2014 10:58 Go to previous messageGo to next message
SergKLP is currently offline  SergKLP
Messages: 2
Registered: October 2014
Hyper-V? i have this problem with Kerio Control running on native Linux without virtualization. Smile
Re: Kerio reporting frequent MAC address changes [message #116836 is a reply to message #116834] Mon, 20 October 2014 11:09 Go to previous messageGo to next message
surjikoff is currently offline  surjikoff
Messages: 3
Registered: September 2014
Location: Moscow
I have DC in windows 2012 R2 and kerio control at lynux on standalone server. DC in nic teaming spaming mac adress changes. With hiper-v all ok.
Re: Kerio reporting frequent MAC address changes [message #116837 is a reply to message #112962] Mon, 20 October 2014 11:16 Go to previous message
rjokl is currently offline  rjokl
Messages: 62
Registered: August 2005
This issue will be fixed in Kerio Control 8.4.1
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