KNX Device - OFFLINE - BRIDGE_OFFLINE & KNX/IP Gateway - OFFLINE - COMMUNICATION_ERROR

My knx binding goes offline sometimes, after which I manually have to reboot.

Please help, I need this to be reliable :cry:

Installation is on a synology diskstation, I only have openHAB Cloud Connector and Knx binding addons

openhab Version and knx binding is 2.4.0

error in paper ui

KNX Device - OFFLINE - BRIDGE_OFFLINE
KNX/IP Gateway - OFFLINE - COMMUNICATION_ERROR

events.log at time of occurence

2020-01-17 22:01:16.420 [hingStatusInfoChangedEvent] - ‘knx:ip:bridge’ changed from ONLINE to OFFLINE (COMMUNICATION_ERROR)
2020-01-17 22:01:16.423 [hingStatusInfoChangedEvent] - ‘knx:device:bridge:generic’ changed from ONLINE to OFFLINE (BRIDGE_OFFLINE)

openhab.log at time of occurence

2020-01-17 22:00:35.708 [WARN ] [Xnet/IP Tunneling 192.168.0.226:3671] - connection state response: server could not find active data connection with specified ID (channel 35)
2020-01-17 22:00:45.639 [WARN ] [Xnet/IP Tunneling 192.168.0.226:3671] - connection state response: server could not find active data connection with specified ID (channel 35)
2020-01-17 22:00:55.640 [WARN ] [Xnet/IP Tunneling 192.168.0.226:3671] - connection state response: server could not find active data connection with specified ID (channel 35)
2020-01-17 22:01:05.641 [WARN ] [Xnet/IP Tunneling 192.168.0.226:3671] - connection state response: server could not find active data connection with specified ID (channel 35)
2020-01-17 22:01:15.677 [WARN ] [Xnet/IP Tunneling 192.168.0.226:3671] - received disconnect response status 0x21 (no active data connection with that ID)
2020-01-17 22:01:15.682 [WARN ] [Xnet/IP Tunneling 192.168.0.226:3671] - close connection - no heartbeat response
2020-01-17 22:01:16.149 [ERROR] [Xnet/IP Tunneling 192.168.0.226:3671] - establishing connection failed, null

first part of knx.things

Bridge knx:ip:bridge [
type=“TUNNEL”,
ipAddress=“192.168.0.226”
] {
Thing device generic {

You may want to upgrade the OH version as 2.4 is over a year old. OH 2.5 is now the latest stable version.