I am having a problem on the second connect after bonding to a bluez 5.43 central

[jlarsen]

I can connect/pair/bond to the nrfConnect app and disconnect then reconnect just fine. When I try to do the same to a central running on arm bluez 5.43, the second and subsequent connections timeout after about 30 seconds and the peripheral gets a BLE_GATTC_EVT_TIMEOUT and disconnects.

I have wireshark cptures of the nrf Connect connections and the failing connection to my central.

1st and 2nd connections working as expected rfconnect.pcapng

1st connection mycentral.pcapng

2nd connection (disconnected by peripheral after 30 seconds) mycentral2.pcapng

[Hung Bui]

Our current sniffer doesn't really support BLE 4.2 features, so it may be difficult to sniff the connection. I would suggest to use more advanced sniffer, Ellysis or Frontline sniffer should do the work.