Bug #3910: Cannot set advskew back to 0 - pfSense - pfSense bugtracker

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Bug #3910

closed

Cannot set advskew back to 0

Added by Chris Buechler over 9 years ago. Updated over 9 years ago.

Status:

Resolved

Priority:

Normal

Assignee:

Renato Botelho

Category:

Operating System

Target version:

2.2

Start date:

10/02/2014

Due date:

% Done:

100%

Estimated time:

Plus Target Version:

Release Notes:

Affected Version:

2.2

Affected Architecture:

Description

When leaving persistent CARP maintenance mode, the advskew is left at 254 on the running system, so it retains backup status when it shouldn't. advskew should be set back to its config-defined value after leaving persistent maintenance mode.

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Updated by Pi Ba over 9 years ago

This seems to me to be a FreeBSD bug, setting advskew to 0 never works.. Setting it to 1 is possible though. Perhaps pfSense carp interfaces should use a minimum advskew value of 1 ?

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Updated by Chris Buechler over 9 years ago

Subject changed from advskew not set back to 0 after leaving persistent maintenance mode to Cannot set advskew back to 0
Category changed from High Availability to Operating System
Status changed from New to Confirmed
Target version deleted (~~2.2~~)

That is correct, we're running the commands correctly to set it back to 0. The source of the issue is FreeBSD 10.1 won't set it back to 0, though any other value works.

I committed a work around to resolve this issue for the time being.

FreeBSD bug opened:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194672

will leave this here to hopefully remove the workaround at some point once that upstream bug is fixed.

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Updated by Jim Pingle over 9 years ago

There still seems to be an issue here. On a current snapshot when I try to leave maintenance mode the skew is stuck at 254 on the LAN side, but it may be related to having IP Alias VIPs using the CARP VIP as their parent.

We probably should automatically set the skew to 1 when the user has it set to 0. 0 is supposed to be for emergency use, we should probably prevent that from being selected directly in the GUI. carp(4) and ifconfig(8) list 0 as being special and default, and 1 is the lowest user-configurable value.

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