# br\_util.log same error every 5 seconds on multiple NAS

**URL:** <https://community.qnap.com/t/br-util-log-same-error-every-5-seconds-on-multiple-nas/7518>\
**Category:** Networking\
**Created:** [November 10, 2026, 10:26pm UTC](https://community.qnap.com/t/br-util-log-same-error-every-5-seconds-on-multiple-nas/7518 "2026-11-10T22:26:42Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MadMaxster](https://avatars.discourse-cdn.com/v4/letter/m/22d042/32.png) [@MadMaxster](https://community.qnap.com/u/MadMaxster)\
**Post date:** [November 10, 2026, 10:26pm UTC](https://community.qnap.com/t/br-util-log-same-error-every-5-seconds-on-multiple-nas/7518/1 "2026-11-10T22:26:42Z")

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Hi All,

Hoping for some help.

I have multiple qnap’s with container station installed and they all report :

[2026-11-10 22:22:06] Error: get bridge id from mapping table failed  
[2026-11-10 22:22:11] Error: get bridge id from mapping table failed  
[2026-11-10 22:22:16] Error: get bridge id from mapping table failed  
[2026-11-10 22:22:21] Error: get bridge id from mapping table failed

every 5 seconds in file : /var/log/network/br\_util.log

Running latest firmware and not doing anything especially funky with containers/virtual switches.

Could someone with container station installed quickly check and verify that they’re not getting these errors reported please.  
If anyone has any ideas on a fix, appreciate the pointers/suggestions.

Thx!

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**Author:** ![OneCD](https://community.qnap.com/user_avatar/community.qnap.com/onecd/32/156_2.png) [@OneCD](https://community.qnap.com/u/OneCD)\
**Post date:** [November 10, 2026, 10:43pm UTC](https://community.qnap.com/t/br-util-log-same-error-every-5-seconds-on-multiple-nas/7518/2 "2026-11-10T22:43:15Z")

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Hi and welcome to the forum. 🙂

> [@MadMaxster](#):
>
> Running latest firmware …

What’s “latest” today, won’t necessarily be the “latest” a year from-now, which is going to be really frustrating for someone in the future reading this and not knowing if their issue is related, because they won’t know which version you’re talking-about.

Please: **always** use the full firmware version and build number when reporting an issue.

For the particular issue in your post, I also suggest including your installed Container Station version.

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<div class="post-metadata">

**Author:** ![MadMaxster](https://avatars.discourse-cdn.com/v4/letter/m/22d042/32.png) [@MadMaxster](https://community.qnap.com/u/MadMaxster)\
**Post date:** [November 10, 2026, 10:52pm UTC](https://community.qnap.com/t/br-util-log-same-error-every-5-seconds-on-multiple-nas/7518/3 "2026-11-10T22:52:07Z")

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Yep - makes sense. Sorry about that.  
Here’s the details.

Model : TS-464  
FW : QTS 5.2.11.3661  
Container Station ver : Version 3.1.2.1742 (2025/11/26)