SOLVED arp: 10:bf:48:e5:f7:66 attempts to modify permanent entry for 192.168.0.1 on epair0b

[MaLaCoiD]

I just wanted to leave a note for others who might have this problem. I was seeing tons of logs like:

Code:

> arp: 10:bf:48:e5:f7:66 attempts to modify permanent entry for 192.168.0.1 on epair3b
> arp: 10:bf:48:e5:f7:66 attempts to modify permanent entry for 192.168.0.1 on epair4b
> arp: 10:bf:48:e5:f7:66 attempts to modify permanent entry for 192.168.0.1 on epair0b
... where 10:bf:48:e5:f7:66 is my router's MAC which of course has 192.168.0.1. The epair*b interfaces are in the jails.

I checked the ARP entries in the jail:

Code:

root@couchpotato_1:/ # arp -a
couchpotato_1 (192.168.0.72) at 02:aa:86:00:11:0b on epair0b permanent [ethernet]
? (192.168.0.1) at 28:28:5d:27:3e:e0 on epair0b permanent [ethernet]

28:28:5d:27:3e:e0 belongs to my previous router, which I replaced a few days ago. A reboot of my FreeNAS box has updated the permanent ARP entries and should resolve my issue.

 

[Vijay]

I have the same exact issue in a jail.

Reboot do not resolve the problem for me. It keep going back to old arp entry of the router which is wrong. It is always showing wrong mac address in the arp table after a reboot, and restart of the jail. Here are other things I tried for which it give me a temporary fix.

• modify arp table with arp -s command within the jail. (Temporary fix, until the next restart of the jail)
• delete the arp entry with arp -d command within the jail. (Temporary fix, until the next restart of the jail)

Outside the jail, things work fine. No issues.

Question is this old arp entry is stored somewhere in a file, where is it and how to remove it?

(I am running FreeNAS-9.3-STABLE-201505130355)

This is with-in Jail (Wrong entry - Not sure where FreeNAS is store this wrong entry)

Code:

# arp -a
..
? (192.168.1.1) at 00:51:56:9f:82:4a on epair0b permanent [ethernet]
..

This is Outside Jail

Code:

 arp -a
..
router (192.168.1.1) at 00:51:56:9f:ef:f4 on vmx3f0 expires in 1123 seconds [ethernet]
..