CARP backup host replies ARP request

F

Franklin Suvi Jesudhas

Hello,
In the following scenario, when machine 1 fails over to Backup, in the CARP configuration, briefly (once) replies to the ARP request with [Duplicate IP address detected for 10.10.4.19 (00:50:56:a7:0f:7f) - also in use by 00:00:5e:00:01:01 (frame 500)]

Machine 1: 10.10.4.17 - Master - Physical MAC: 00:50:56:a7:0f:7f
Machine 2: 10.10.4.18 - Backup - Physical MAC: 00:50:56:a7:e3:41
Virtual IP: 10.10.4.19
Virtual MAC: 00:00:5e:00:01:01

This problem is noticed on 13.0-RELEASE-p13 FreeBSD 13.0-RELEASE-p13 #0

Please advise.
Thanks.
 
13.1-STABLE is old and out-dated. Try 13.1-RELEASE or the beta of 13.2-RELEASE.

forums.freebsd.org

LTS support and version clarifications

Hello everybody, I have read the documentation for a while but have not been able to clarify my doubts. I will try to be as short as possible. At present according to this table: https://www.freebsd.org/security/#sup the latest LTS version is Stable 12. So if I wanted to have a long support I...
forums.freebsd.org forums.freebsd.org
 
Tested with FreeBSD13.2 Beta 3 now, and the issue is observed there as well.

FreeBSD C100V-DUT001.cs39 13.2-BETA3 FreeBSD 13.2-BETA3 releng/13.2-n254537-d0e8ce556627 GENERIC amd64
 

Attachments

  • wireshark.png
    wireshark.png
    67 KB · Views: 87
During failover, any idea why the going-to-be-backup device responding with "Duplicate IP address detected for the Virtual IP address " ?
is there a way to stop this ?
 
During failover, the BACKUP device erroneously respond to the ARP announcement with "Duplicate IP address detected for the Virtual IP address ". When this happens I see that the Virtual IP address is assigned to the Physical MAC address. Any solution to this ?
 
You must log in or register to reply here.
Back
Top