KNX Router mode: frame length 0 error for every KNX telegram

Add-ons Bindings
, ,
1

I’m using the KNX Binding and have my KNX bridge configured in router mode. It works as expected, but since some days I receive an error message for every KNX telegram that is sent to the bus:

2019-02-14 18:52:24.207 [WARN ] [p.KNXnet/IP Routing 224.0.23.12:3671] - received frame length 0 for KNXnet/IP 1.0, routing.ind (0x530), header size 6 total 19 - ignored

The binding configurations looks as follows:

Bridge knx:ip:bridge [ 
    ipAddress="224.0.23.12", 
    localIp="192.168.178.90", 
    type="ROUTER", 
    readingPause=50, 
    responseTimeout=10, 
    readRetriesLimit=3, 
    autoReconnectPeriod=5,
    localSourceAddr="1.0.252"
] {}

I also receive this error, when I delete all KNX related things and items.
Google doesn’t give me any hint what could cause such an error message.
Any hint appreciated!

Thanks,
Jonas

2

Locale source Add???

Why the {} brackets in the things file if no Things are added?

3

What do you mean?

Currently removed for testing. Doesn’t matter - error appears with and without Things added.

4

Where does "1.0.252" come from?

5

Defined by me.
The KNX binding docs say:

localSourceAddr - The (virtual) individual address for identification of this KNX/IP gateway within the KNX bus

Without it defaults to 0.0.0 - but doesn’t change anything for the error message.

6

Doc’s also mention it’s not required, maybe try without using a local source add.

Do you get additional information when setting the log level to DEBUG?

7

Already tried without - no change.

That’s the log with log level DEBUG:

2019-02-14 22:08:00.122 [DEBUG] [calimero.link.224.0.23.12:3671      ] - indication 1.0.6->7/0/0 L_Data.ind, low priority hop count 5, tpdu 00 80
2019-02-14 22:08:00.123 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@441ad9a9[p=0,l=144,c=32768,r=144]={<<<event: message\nda...mStateEvent"}\n\n>>>\\"oldValue\\":\\"OF...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@7ed702c5{null}
2019-02-14 22:08:00.124 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@35c091af[PROCESSING][i=null,cb=org.eclipse.jetty.server.HttpChannel$ContentCallback@6785a9a2] generate: FLUSH (null,[p=0,l=144,c=32768,r=144],false)@COMMITTED
2019-02-14 22:08:00.124 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 150 SocketChannelEndPoint@31587285{/2003:cb:971a:1b00:9599:5eb2:98d4:210d:50559<->/2003:cb:971a:1b00:115b:5f47:bf2a:f13f:8888,OPEN,fill=-,flush=W,to=1657/30000}{io=0/0,kio=0,kro=1}->HttpConnection@652e1d2e[p=HttpParser{s=END,0 of -1},g=HttpGenerator@202c9fef{s=COMMITTED}]=>HttpChannelOverHttp@7c147932{r=32,c=true,a=ASYNC_WAIT,uri=//schaltzentrala9a2] generate: DONE (null,[p=144,l=144,c=32768,r=0],false)@COMMITTED
2019-02-14 22:08:00.125 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@441ad9a9[p=0,l=200,c=32768,r=200]={<<<event: message\nda...hangedEvent"}\n\n>>>edEvent"}\n\nid\\":6...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@7ed702c5{null}
2019-02-14 22:08:00.126 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@35c091af[PROCESSING][i=null,cb=org.eclipse.jetty.server.HttpChannel$ContentCallback@7e7534fe] generate: FLUSH (null,[p=0,l=200,c=32768,r=200],false)@COMMITTED
2019-02-14 22:08:00.126 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 206 SocketChannelEndPoint@31587285{/2003:cb:971a:1b00:9599:5eb2:98d4:210d:50559<->/2003:cb:971a:1b00:115b:5f47:bf2a:f13f:8888,OPEN,fill=-,flush=W,to=1/30000}{io=0/0,kio=0,kro=1}->HttpConnection@652e1d2e[p=HttpParser{s=END,0 of -1},g=HttpGenerator@202c9fef{s=COMMITTED}]=>HttpChannelOverHttp@7c147932{r=32,c=true,a=ASYNC_WAIT,uri=//server:8888/rest/events,age=624603}
2019-02-14 22:08:00.126 [DEBUG] [org.eclipse.jetty.io.WriteFlusher   ] - Flushed=true written=206 remaining=0 WriteFlusher@4054e10a{WRITING}->null
2019-02-14 22:08:00.127 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@35c091af[PROCESSING][i=null,cb=org.eclipse.jetty.server.HttpChannel$ContentCallback@7e7534fe] generate: DONE (null,[p=200,l=200,c=32768,r=0],false)@COMMITTED
2019-02-14 22:08:00.221 [WARN ] [p.KNXnet/IP Routing 224.0.23.12:3671] - received frame length 0 for KNXnet/IP 1.0, routing.ind (0x530), header size 6 total 17 - ignored
2019-02-14 22:08:00.241 [DEBUG] [calimero.link.224.0.23.12:3671      ] - indication 1.0.3->7/0/1 L_Data.ind, low priority hop count 5, tpdu 00 80
2019-02-14 22:08:00.244 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@441ad9a9[p=0,l=144,c=32768,r=144]={<<<event: message\nda...mStateEvent"}\n\n>>>,\\"oldValue\\":\\"O...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@7ed702c5{null}
2019-02-14 22:08:00.245 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@35c091af[PROCESSING][i=null,cb=org.eclipse.jetty.server.HttpChannel$ContentCallback@791f7489] generate: FLUSH (null,[p=0,l=144,c=32768,r=144],false)@COMMITTED
2019-02-14 22:08:00.246 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 150 SocketChannelEndPoint@31587285{/2003:cb:971a:1b00:9599:5eb2:98d4:210d:50559<->/2003:cb:971a:1b00:115b:5f47:bf2a:f13f:8888,OPEN,fill=-,flush=W,to=120/30000}{io=0/0,kio=0,kro=1}->HttpConnection@652e1d2e[p=HttpParser{s=END,0 of -1},g=HttpGenerator@202c9fef{s=COMMITTED}]=>HttpChannelOverHttp@7c147932{r=32,c=true,a=ASYNC_WAIT,uri=//server:8888/rest/events,age=624723}
2019-02-14 22:08:00.246 [DEBUG] [org.eclipse.jetty.io.WriteFlusher   ] - Flushed=true written=150 remaining=0 WriteFlusher@4054e10a{WRITING}->null
2019-02-14 22:08:00.247 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@35c091af[PROCESSING][i=null,cb=org.eclipse.jetty.server.HttpChannel$ContentCallback@791f7489] generate: DONE (null,[p=144,l=144,c=32768,r=0],false)@COMMITTED
2019-02-14 22:08:00.302 [DEBUG] [calimero.link.224.0.23.12:3671      ] - indication 1.0.6->7/0/0 L_Data.ind, low priority hop count 5, tpdu 00 80
2019-02-14 22:08:00.305 [DEBUG] [org.eclipse.jetty.server.HttpChannel] - sendResponse info=null content=DirectByteBuffer@441ad9a9[p=0,l=144,c=32768,r=144]={<<<event: message\nda...mStateEvent"}\n\n>>>,\\"oldValue\\":\\"O...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00} complete=false committing=false callback=Blocker@7ed702c5{null}
2019-02-14 22:08:00.306 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@35c091af[PROCESSING][i=null,cb=org.eclipse.jetty.server.HttpChannel$ContentCallback@3b5b8d29] generate: FLUSH (null,[p=0,l=144,c=32768,r=144],false)@COMMITTED
2019-02-14 22:08:00.307 [DEBUG] [org.eclipse.jetty.io.ChannelEndPoint] - flushed 150 SocketChannelEndPoint@31587285{/2003:cb:971a:1b00:9599:5eb2:98d4:210d:50559<->/2003:cb:971a:1b00:115b:5f47:bf2a:f13f:8888,OPEN,fill=-,flush=W,to=60/30000}{io=0/0,kio=0,kro=1}->HttpConnection@652e1d2e[p=HttpParser{s=END,0 of -1},g=HttpGenerator@202c9fef{s=COMMITTED}]=>HttpChannelOverHttp@7c147932{r=32,c=true,a=ASYNC_WAIT,uri=//server:8888/rest/events,age=624784}
2019-02-14 22:08:00.308 [DEBUG] [org.eclipse.jetty.io.WriteFlusher   ] - Flushed=true written=150 remaining=0 WriteFlusher@4054e10a{WRITING}->null
2019-02-14 22:08:00.308 [DEBUG] [.eclipse.jetty.server.HttpConnection] - org.eclipse.jetty.server.HttpConnection$SendCallback@35c091af[PROCESSING][i=null,cb=org.eclipse.jetty.server.HttpChannel$ContentCallback@3b5b8d29] generate: DONE (null,[p=144,l=144,c=32768,r=0],false)@COMMITTED
2019-02-14 22:08:00.331 [WARN ] [p.KNXnet/IP Routing 224.0.23.12:3671] - received frame length 0 for KNXnet/IP 1.0, routing.ind (0x530), header size 6 total 17 - ignored
2019-02-14 22:08:00.441 [WARN ] [p.KNXnet/IP Routing 224.0.23.12:3671] - received frame length 0 for KNXnet/IP 1.0, routing.ind (0x530), header size 6 total 17 - ignored
8

I have just learned openhab2 and I have an error just like you . Can you fix it ??? help me

9

I have a problem. Please help me…

:wink: Maybe a BIT more information would be helpful… log, config…