[Bug]: Broadcast Storm is possible on 2.7.15.567b8ea

[FFAMax]

Category

Other

Hardware

Other

Is this bug report about any UI component firmware like InkHUD or Meshtatic UI (MUI)?

• Meshtastic UI aka MUI colorTFT
• InkHUD ePaper
• OLED slide UI on any display

Firmware Version

2.7.15.567b8ea

Description

Dear Team,

I have reproduced the issue where the Packet ID Filtering mechanism fails to function correctly for repeated packets. This issue may potentially affect other firmware versions as well.

I recommend considering a status change for version 2.7.15.567b8ea from Stable to Unstable until the bug is resolved.

Importance:
This issue is critical, as such bugs significantly undermine the reliability of networks, leading to potential disruptions in performance.

Relevant log output

Search `Completed sending (id=0x3b06ca0b`


DEBUG | ??:??:?? 578 [RadioIf] Corrected frequency offset: -45.531250
DEBUG | ??:??:?? 578 [RadioIf] Lora RX (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 0, WantAck=0, HopLim=7 Ch=0x8 encrypted len=43 rxSNR=-20.25 rxRSSI=-115 hopStart=7 relay=0x)
DEBUG | ??:??:?? 578 [RadioIf] Packet RX: 559ms
INFO  | ??:??:?? 578 [Router] Packet History - insert: Using new slot @uptime 578.134s TRACE NEW
DEBUG | ??:??:?? 578 [Router] Use channel 0 (hash 0x8)
DEBUG | ??:??:?? 578 [Router] Expand short PSK #1
DEBUG | ??:??:?? 578 [Router] Use AES128 key!
DEBUG | ??:??:?? 578 [Router] decoded message (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=7 Ch=0x0 Portnum=67 rxSNR=-20.25 rxRSSI=-115 hopStart=7 relay=04
DEBUG | ??:??:?? 578 [Router] handleReceived(REMOTE) (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=7 Ch=0x0 Portnum=67 rxSNR=-20.25 rxRSSI=-115 hopStart=7 e
DEBUG | ??:??:?? 578 [Router] Module 'DeviceTelemetry' wantsPacket=1
INFO  | ??:??:?? 578 [Router] Received DeviceTelemetry from=0x3b46b980, id=0x3b06ca0b, portnum=67, payloadlen=23
INFO  | ??:??:?? 578 [Router] (Received from b980): air_util_tx=2.100806, channel_utilization=15.120000, battery_level=101, voltage=0.000000
DEBUG | ??:??:?? 578 [Router] updateTelemetry REMOTE node=0x3b46b980 
DEBUG | ??:??:?? 578 [Router] Node status update: 59 online, 59 total
DEBUG | ??:??:?? 578 [Router] Module 'DeviceTelemetry' considered
DEBUG | ??:??:?? 578 [Router] Module 'PowerTelemetry' wantsPacket=1
INFO  | ??:??:?? 578 [Router] Received PowerTelemetry from=0x3b46b980, id=0x3b06ca0b, portnum=67, payloadlen=23
DEBUG | ??:??:?? 578 [Router] Module 'PowerTelemetry' considered
DEBUG | ??:??:?? 578 [Router] Module 'routing' wantsPacket=1
INFO  | ??:??:?? 578 [Router] Received routing from=0x3b46b980, id=0x3b06ca0b, portnum=67, payloadlen=23
DEBUG | ??:??:?? 578 [Router] Routing sniffing (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=7 Ch=0x0 Portnum=67 rxSNR=-20.25 rxRSSI=-115 hopStart=7 relay=x
INFO  | ??:??:?? 578 [Router] Rebroadcast received message coming from 41
INFO  | ??:??:?? 578 [Router] Packet History - insert: Reusing slot aged 0.137s TRACE MATCHED PACKET
DEBUG | ??:??:?? 578 [Router] Expand short PSK #1
DEBUG | ??:??:?? 578 [Router] Use AES128 key!
DEBUG | ??:??:?? 578 [Router] enqueue for send (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=6 Ch=0x8 encrypted len=43 rxSNR=-20.25 rxRSSI=-115 hopStart=7 e
DEBUG | ??:??:?? 578 [Router] txGood=10,txRelay=6,rxGood=13,rxBad=6
DEBUG | ??:??:?? 578 [Router] rx_snr found. hop_limit:6 rx_snr:-20.250000
DEBUG | ??:??:?? 578 [Router] rx_snr found in packet. Setting tx delay:476
DEBUG | ??:??:?? 578 [Router] Delivering rx packet (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=7 Ch=0x0 Portnum=67 rxSNR=-20.25 rxRSSI=-115 hopStart=7 rea
DEBUG | ??:??:?? 578 [Router] Update DB node 0x3b46b980, rx_time=0
INFO  | ??:??:?? 578 [Router] Sort took 0 milliseconds
DEBUG | ??:??:?? 578 [Router] Forwarding to phone (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=7 Ch=0x0 Portnum=67 rxSNR=-20.25 rxRSSI=-115 hopStart=7 rely
DEBUG | ??:??:?? 578 [Router] Module 'routing' considered
DEBUG | ??:??:?? 578 [RadioIf] Started Tx (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=6 Ch=0x8 encrypted len=43 rxSNR=-20.25 rxRSSI=-115 hopStart=7 relayx
DEBUG | ??:??:?? 578 [RadioIf] 0 packets remain in the TX queue
DEBUG | ??:??:?? 579 [RadioIf] Packet TX: 559ms
DEBUG | ??:??:?? 579 [RadioIf] Completed sending (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=6 Ch=0x8 encrypted len=43 rxSNR=-20.25 rxRSSI=-115 hopStart=r
ERROR | ??:??:?? 580 [RadioIf] Ignore received packet due to error=-7 (maybe to=0x3b46b980, from=0x8dd0d641, flags=0xef)
DEBUG | ??:??:?? 580 [RadioIf] Packet RX (noise?) : 641ms
DEBUG | ??:??:?? 580 [RadioIf] Corrected frequency offset: 51.343746
DEBUG | ??:??:?? 580 [RadioIf] Lora RX (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 0, WantAck=0, HopLim=7 Ch=0x8 encrypted len=43 rxSNR=6.5 rxRSSI=-26 hopStart=7 relay=0xd4)
DEBUG | ??:??:?? 580 [RadioIf] Packet RX: 559ms
INFO  | ??:??:?? 580 [Router] Packet History - insert: Reusing slot aged 2.388s TRACE MATCHED PACKET
DEBUG | ??:??:?? 580 [Router] Ignore dupe incoming msg (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=7 Ch=0x8 encrypted len=43 rxSNR=6.5 rxRSSI=-26 hopStar=
DEBUG | ??:??:?? 580 [Router] Repeated reliable tx
INFO  | ??:??:?? 580 [Router] Rebroadcast received message coming from d4
INFO  | ??:??:?? 580 [Router] Packet History - insert: Reusing slot aged 0.008s TRACE MATCHED PACKET
DEBUG | ??:??:?? 580 [Router] enqueue for send (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=6 Ch=0x8 encrypted len=43 rxSNR=6.5 rxRSSI=-26 hopStart=7 rela=
DEBUG | ??:??:?? 580 [Router] txGood=11,txRelay=7,rxGood=14,rxBad=7
DEBUG | ??:??:?? 580 [Router] rx_snr found. hop_limit:6 rx_snr:6.500000
DEBUG | ??:??:?? 580 [Router] rx_snr found in packet. Setting tx delay:1092
DEBUG | ??:??:?? 580 [Router] Incoming msg was filtered from 0x3b46b980
DEBUG | ??:??:?? 581 [RadioIf] Started Tx (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=6 Ch=0x8 encrypted len=43 rxSNR=6.5 rxRSSI=-26 hopStart=7 relay=0xbp
DEBUG | ??:??:?? 581 [RadioIf] 0 packets remain in the TX queue
DEBUG | ??:??:?? 582 [RadioIf] Packet TX: 559ms
DEBUG | ??:??:?? 582 [RadioIf] Completed sending (id=0x3b06ca0b fr=0x3b46b980 to=0xffffffff, transport = 1, WantAck=0, HopLim=6 Ch=0x8 encrypted len=43 rxSNR=6.5 rxRSSI=-26 hopStart=7 rey



One more example:

$ grep "00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e. 08 00 .." /tmp/1 -A3 -B1
RSSI: -52.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -75.0 SNR: 6.0
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -54.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -76.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 6.25
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -75.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -75.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -75.0 SNR: 5.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 6.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 6.0
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -75.0 SNR: 6.0
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 6.0
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -76.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 6.0
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -76.0 SNR: 5.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -54.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -76.0 SNR: 5.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 5.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -75.0 SNR: 5.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -54.0 SNR: 5.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 5.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -53.0 SNR: 6.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -59.0 SNR: 6.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -75.0 SNR: 6.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -55.0 SNR: 6.5
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e7 08 00 d4   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....
--
RSSI: -75.0 SNR: 6.75
00000000  ff ff ff ff d8 32 60 33 cc b3 b5 72 e6 08 00 b9   .....2`3...r....
00000010  b0 3d e3 38 e0 98 2c 6d c3 2a 74 36 3d 8b a8 66   .=.8..,m.*t6=..f
00000020  0b 0e 44 06 f9 6d c2 75 45 e6 bc 85 e6 5b 14 82   ..D..m.uE....[..
00000030  98 49 b0 81 f3 94 88                              .I.....

Used HW: seeed_xiao_nrf52840_kit

[FFAMax]

Draft

bool NextHopRouter::perhapsRebroadcast(const meshtastic_MeshPacket *p)
{
    // Check if we've already seen and processed this packet to prevent broadcast storms
    if (p->id != 0) {
        bool seenRecently = wasSeenRecently(p, false); // Check without updating history
        if (seenRecently) {
            uint8_t ourRelayID = nodeDB->getLastByteOfNodeNum(getNodeNum());
            // If we were already a relayer of this packet, don't rebroadcast again
            if (wasRelayer(ourRelayID, p->id, getFrom(p))) {
                LOG_DEBUG("DUP! Ignored rebroadcast - already relayed packet from %x id %x", getFrom(p), p->id);
                return false;
            }
        }
    }

DEBUG | ??:??:?? 97 [Router] Packet History - was relayer: s=4357ee0c id=eab329a0 nh=00 age=45 rls=41 d4 b9 InHistory,check:b9
DEBUG | ??:??:?? 97 [Router] Packet History - was rel.PR.: s=4357ee0c id=eab329a0 rls=41 d4 b9 / rl=b9? NO
DEBUG | ??:??:?? 97 [Router] DUP! Ignored rebroadcast - already relayed packet from 4357ee0c id eab329a0

[GUVWAF]

I see "Repeated reliable tx" in the logs, which means this is as designed.

This happens only when the original transmitter retransmits the packet. Then the next node will rebroadcast again in order to make sure the initial transmitter gets an implicit acknowledgment and stops retransmitting.

Nodes further on (more than 0 hops away) will not rebroadcast again.

[FFAMax]

It is understood that the message is intentionally retransmitted multiple times, and the relay node also intentionally forwards it repeatedly. However, this example clearly demonstrates that, under certain conditions, a relay can uncontrollably and indefinitely retransmit the same packet until radio channel utilization reaches its maximum limits, at which point further communication becomes impossible due to regulatory or protocol-imposed airtime constraints.

In my opinion, any independent node that transmits over the air should implement more robust logic to prevent such basic scenarios. Specifically, packets that can be identified as having been transmitted multiple times previously should be correctly detected and excluded from further forwarding. Such a mechanism should be considered a fundamental safeguard against broadcast storm conditions.

[GUVWAF]

a relay can uncontrollably and indefinitely retransmit the same packet until radio channel utilization reaches its maximum limits

Only the 0-hop relayer will retransmit, there will be no broadcast storm. And it only happens when the original transmitter also retransmits indefinitely, something which the default firmware never does.

[sibrat]

there will be broadcast storm if initiator is powerful but deaf device (heltec v4) and 0-hop relayer with good antenna