Publish functions as expected, but results in continuous, very heavy HCI traffic (~every .7ms per btmon log). I don't think it's my application as the problem persists after the application disconnects from dbus and exits. The calls to LE Set Adv Param all fail. Prior to the Publish call, LE Set Param calls succeed. The only difference I can see is the failing ones have an interval of 50ms and the ones that succeed have 100ms. A successful one is appended. I'm at current Bluez head (65231892cd). The platform is a rpi4. Below is a pretty normal looking meshd log, a btmon dump and some more normal looking dbus traffic. Steve Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/node.c:publish_call() Publish Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/mesh-config-json.c:mesh_config_write_seq_number() Seq Cache: 210 -> 274 Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/model.c:mesh_model_rx() iv_index 00000000 key_aid = 6e Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46976.692 Used App Key: dae814b7da47ab8c992fcc03a60c100b Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46976.692 Clr Rx: 820200030064 Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/net.c:send_seg() segN 0 segment 0 seg_off 0 Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46976.692 Clr-Net Tx: 00080000d10001c0006eaaffbb7633799725e9d600000000 Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46976.693 RX: Network [enc] :: 7eb235f367ed0172ca7d0345f4a1d9ce42d116f80ab00b0e Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46976.693 RX: Network [clr] :: 7e080000d10001c0006eaaffbb7633799725e9d6 Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46976.715 RX: Network [enc] :: 7e6e7c8a337f4355f2921b9d8fd3e7eb3a866af261fc46d1 Dec 22 09:22:56 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46976.715 RX: Network [clr] :: 7e070000d10001c0006eaaffbb7633799725e9d6 Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46977.097 RX: Network [enc] :: 7e3a351647d646ec107415b165540e1057fdc9847c Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46977.097 RX: Network [clr] :: 7e0a00007d010000016e8961a6de509fb1 Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/net.c:msg_in_cache() Add 0100 + 00007d + 6e8961a6 Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/net.c:packet_received() RX: Network 0100 -> 0001 : TTL 0x0a : IV : 00000000 SEQ 0x00007d Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/net.c:packet_received() RX: App 0x0100 -> 0x0001 : TTL 0x0a : SEQ 0x00007d Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/model.c:mesh_model_rx() iv_index 00000000 key_aid = 6e Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46977.097 Used App Key: dae814b7da47ab8c992fcc03a60c100b Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/util.c:print_packet() 46977.097 Clr Rx: 820400 Dec 22 09:22:57 mesh0 bluetooth-meshd[38760]: mesh/model.c:send_msg_rcvd() Send "MessageReceived" ============================================================================================================================ btmon output after Publish call: < HCI Command: LE Set Advertising Parameters (0x08|0x0006) plen 15 #1756 [hci0] 60.253779 Min advertising interval: 50.000 msec (0x0050) Max advertising interval: 50.000 msec (0x0050) Type: Non connectable undirected - ADV_NONCONN_IND (0x03) Own address type: Random (0x01) Direct address type: Public (0x00) Direct address: 00:00:00:00:00:00 (OUI 00-00-00) Channel map: 37, 38, 39 (0x07) Filter policy: Allow Scan Request from White List Only, Allow Connect Request from White List Only (0x03) > HCI Event: Command Complete (0x0e) plen 4 #1757 [hci0] 60.254089 LE Set Advertising Parameters (0x08|0x0006) ncmd 1 Status: Invalid HCI Command Parameters (0x12) < HCI Command: LE Set Advertising Data (0x08|0x0008) plen 32 #1758 [hci0] 60.254304 Length: 26 Mesh Data: 7eb235f367ed0172ca7d0345f4a1d9ce42d116f80ab00b0e IVI: 0 NID: 0x7e b2 35 f3 67 ed 01 72 ca 7d 03 45 f4 a1 d9 ce 42 .5.g..r.}.E....B d1 16 f8 0a b0 0b 0e ....... > HCI Event: Command Complete (0x0e) plen 4 #1759 [hci0] 60.254686 LE Set Advertising Data (0x08|0x0008) ncmd 1 Status: Success (0x00) < HCI Command: LE Set Advertise Enable (0x08|0x000a) plen 1 #1760 [hci0] 60.254874 Advertising: Enabled (0x01) > HCI Event: Command Complete (0x0e) plen 4 #1761 [hci0] 60.255170 LE Set Advertise Enable (0x08|0x000a) ncmd 1 Status: Success (0x00) < HCI Command: LE Set Advertise Enable (0x08|0x000a) plen 1 #1762 [hci0] 60.302847 Advertising: Disabled (0x00) > HCI Event: Command Complete (0x0e) plen 4 #1763 [hci0] 60.303586 LE Set Advertise Enable (0x08|0x000a) ncmd 1 Status: Success (0x00) < HCI Command: LE Set Advertising Parameters (0x08|0x0006) plen 15 #1764 [hci0] 60.303744 Min advertising interval: 50.000 msec (0x0050) Max advertising interval: 50.000 msec (0x0050) Type: Non connectable undirected - ADV_NONCONN_IND (0x03) Own address type: Random (0x01) Direct address type: Public (0x00) Direct address: 00:00:00:00:00:00 (OUI 00-00-00) Channel map: 37, 38, 39 (0x07) Filter policy: Allow Scan Request from White List Only, Allow Connect Request from White List Only (0x03) > HCI Event: Command Complete (0x0e) plen 4 #1765 [hci0] 60.304053 LE Set Advertising Parameters (0x08|0x0006) ncmd 1 ===================================================================================================== dbus-monitor output method call time=1608649585.797421 sender=:1.223 -> destination=org.bluez.mesh serial=21 path=/org/bluez/mesh/nodeb3f28276086958109ac1e2cbd76fbf7e; interface=org.bluez.mesh.Node1; member=Publish object path "/com/silvair/sample/element0" uint16 4097 array [ ] array of bytes [ 82 02 00 03 00 64 ] method return time=1608649585.798741 sender=:1.221 -> destination=:1.223 serial=29 reply_serial=21 method call time=1608649586.337429 sender=:1.221 -> destination=:1.223 serial=30 path=/com/silvair/sample/element0; interface=org.bluez.mesh.Element1; member=MessageReceived uint16 256 uint16 1 variant uint16 1 array of bytes [ 82 04 00 ] =================================================================================== Successful LE Set Adv Param < HCI Command: LE Set Advertising Parameters (0x08|0x0006) plen 15 #90 [hci0] 6.392018 Min advertising interval: 100.000 msec (0x00a0) Max advertising interval: 100.000 msec (0x00a0) Type: Non connectable undirected - ADV_NONCONN_IND (0x03) Own address type: Random (0x01) Direct address type: Public (0x00) Direct address: 00:00:00:00:00:00 (OUI 00-00-00) Channel map: 37, 38, 39 (0x07) Filter policy: Allow Scan Request from White List Only, Allow Connect Request from White List Only (0x03) > HCI Event: Command Complete (0x0e) plen 4 #91 [hci0] 6.392399 LE Set Advertising Parameters (0x08|0x0006) ncmd 1 Status: Success (0x00)