mqtt 6.0.1 Socket errors and device disconnecting

[Tomax77]

The problem

Newest mosquitto mqtt addon not working properly as it produces many errors when connecting to a client in log:

1621617441: New connection from 172.30.32.1 on port 1883.
1621617441: Socket error on client , disconnecting.
1621617456: New connection from 172.30.32.1 on port 1883.
1621617456: Socket error on client , disconnecting.
1621617471: New connection from 172.30.32.1 on port 1883.
....

HA Core messages are:
21-05-21 17:26:07 INFO (MainThread) [supervisor.auth] Auth request from 'core_mosquitto' for 'mqtt'
21-05-21 17:26:08 WARNING (MainThread) [supervisor.auth] Unauthorized login for 'mqtt'

Environment

HA Supervised
core-2021.5.5
supervisor-2021.04.3
OS: Debian Buster 10
Docker: 20.10.6

• Add-on with the issue: mosquitto mqtt
• Add-on release with the issue: 6.0.1
• Last working add-on release (if known): 5.1.1
• Operating environment (OS/Supervised): Debian Buster HA Supervised

Problem-relevant configuration

#Mosquito config:
logins:
username: mqtt
password: XXXXX
customize:
active: false
folder: mosquitto
certfile: fullchain.pem
keyfile: privkey.pem
require_certificate: false

#zigbee2mqtt config:
data_path: /config/zigbee2mqtt
external_converters: []
devices: devices.yaml
groups: groups.yaml
homeassistant: true
permit_join: false
mqtt:
base_topic: zigbee2mqtt
server: 'mqtt://192.168.XXX.XXX:1883'
user: mqtt
password: XXXXXXX
serial:
port: >-
/dev/serial/by-id/usb-Texas_Instruments_TI_CC2531_USB_CDC___0X00124B001938C45E-if00
advanced:

[Mariusthvdb]

duplicate? see: #2025

[Tomax77]

Ok, didn't see this messages in version 5.1.1. But if it is normal behaviour my issue can be closed

[Tomax77]

Repeating HA core messages are strange and consulting. Any clue to solve it?

[mhzawadi]

I found that a reconfig of the integration to use the user I setup for MQTT sorted out any issues I had

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.