Constant gnunet_sys::GNUNET_CORE_KxState_GNUNET_CORE_KX_CORE_DISCONNECT

pub const GNUNET_CORE_KxState_GNUNET_CORE_KX_CORE_DISCONNECT: GNUNET_CORE_KxState = 7;

This is not a state in a peer’s state machine, but a special value used with the #GNUNET_CORE_MonitorCallback to indicate that we lost the connection to the CORE service (and will try to reconnect). If this happens, most likely the CORE service crashed and thus all connection state should be assumed lost.