diff --git a/bellows/__init__.py b/bellows/__init__.py
index d7387d67..37b97d1e 100644
--- a/bellows/__init__.py
+++ b/bellows/__init__.py
@@ -1,5 +1,5 @@
 MAJOR_VERSION = 0
 MINOR_VERSION = 31
-PATCH_VERSION = "2"
+PATCH_VERSION = "3"
 __short_version__ = f"{MAJOR_VERSION}.{MINOR_VERSION}"
 __version__ = f"{__short_version__}.{PATCH_VERSION}"
diff --git a/bellows/ezsp/protocol.py b/bellows/ezsp/protocol.py
index ad479121..4246a0c5 100644
--- a/bellows/ezsp/protocol.py
+++ b/bellows/ezsp/protocol.py
@@ -134,8 +134,20 @@ async def update_policies(self, zigpy_config: dict) -> None:
 
     def __call__(self, data: bytes) -> None:
         """Handler for received data frame."""
+        orig_data = data
         sequence, frame_id, data = self._ezsp_frame_rx(data)
-        frame_name = self.COMMANDS_BY_ID[frame_id][0]
+
+        try:
+            frame_name = self.COMMANDS_BY_ID[frame_id][0]
+        except KeyError:
+            LOGGER.warning(
+                "Unknown application frame 0x%04X received: %s (%s).  This is a bug!",
+                frame_id,
+                binascii.hexlify(data),
+                binascii.hexlify(orig_data),
+            )
+            return
+
         LOGGER.debug(
             "Application frame %s (%s) received: %s",
             frame_id,
diff --git a/bellows/ezsp/v9/commands.py b/bellows/ezsp/v9/commands.py
index 5dbaed7a..edc35fac 100644
--- a/bellows/ezsp/v9/commands.py
+++ b/bellows/ezsp/v9/commands.py
@@ -124,12 +124,12 @@
     "getChildData": (
         0x004A,
         (t.uint8_t,),
-        (t.EmberStatus, t.EmberNodeId, t.EmberEUI64, t.EmberNodeType),
+        (t.EmberStatus, t.EmberChildData),
     ),
     "setChildData": (
         0x00AC,
         (t.uint8_t,),
-        (t.EmberStatus, t.EmberNodeId, t.EmberEUI64, t.EmberNodeType),
+        (t.EmberStatus, t.EmberChildData),
     ),
     "getSourceRouteTableTotalSize": (0x00C3, (), (t.uint8_t,)),
     "getSourceRouteTableFilledSize": (0x00C2, (), (t.uint8_t,)),
diff --git a/bellows/ezsp/v9/types/struct.py b/bellows/ezsp/v9/types/struct.py
index 0ba6a006..15b913e2 100644
--- a/bellows/ezsp/v9/types/struct.py
+++ b/bellows/ezsp/v9/types/struct.py
@@ -202,3 +202,25 @@ class EmberTransientKeyData(EzspStruct):
     # The number of seconds remaining before the key is automatically timed out of the
     # transient key table.
     remainingTimeSeconds: basic.uint16_t
+
+
+class EmberChildData(EzspStruct):
+    """A structure containing a child node's data."""
+
+    # The EUI64 of the child
+    eui64: named.EmberEUI64
+    # The node type of the child
+    type: named.EmberNodeType
+    # The short address of the child
+    id: named.EmberNodeId
+    # The phy of the child
+    phy: basic.uint8_t
+    # The power of the child
+    power: basic.uint8_t
+    # The timeout of the child
+    timeout: basic.uint8_t
+
+    # The GPD's EUI64.
+    # gpdIeeeAddress: named.EmberEUI64
+    # The GPD's source ID.
+    # sourceId: basic.uint32_t
diff --git a/bellows/zigbee/application.py b/bellows/zigbee/application.py
index bd96e831..f3af3dcd 100644
--- a/bellows/zigbee/application.py
+++ b/bellows/zigbee/application.py
@@ -5,7 +5,6 @@
 import os
 from typing import Dict, Optional
 
-from serial import SerialException
 import zigpy.application
 import zigpy.config
 import zigpy.device
@@ -337,6 +336,8 @@ async def load_network_info(self, *, load_devices=False) -> None:
             # Ignore invalid NWK entries
             if nwk in t.EmberDistinguishedNodeId.__members__.values():
                 continue
+            elif eui64 == t.EmberEUI64.convert("00:00:00:00:00:00:00:00"):
+                continue
 
             self.state.network_info.nwk_addresses[
                 zigpy.types.EUI64(eui64)
@@ -650,8 +651,12 @@ async def _reset_controller_loop(self):
             try:
                 await self._reset_controller()
                 break
-            except (asyncio.TimeoutError, SerialException) as exc:
-                LOGGER.debug("ControllerApplication reset unsuccessful: %s", str(exc))
+            except Exception as exc:
+                LOGGER.warning(
+                    "ControllerApplication reset unsuccessful: %s",
+                    repr(exc),
+                    exc_info=exc,
+                )
             await asyncio.sleep(RESET_ATTEMPT_BACKOFF_TIME)
 
         self._reset_task = None
diff --git a/tests/test_application_network_state.py b/tests/test_application_network_state.py
index 4339f520..75b3c89e 100644
--- a/tests/test_application_network_state.py
+++ b/tests/test_application_network_state.py
@@ -280,6 +280,7 @@ def get_addr_table_node_id(index):
             {
                 16: t.EmberNodeId(0x44CB),
                 17: t.EmberNodeId(0x0702),
+                18: t.EmberNodeId(0x0000),  # bogus entry
             }.get(index, t.EmberNodeId(0xFFFF)),
         )
 
@@ -290,11 +291,12 @@ def get_addr_table_node_id(index):
     def get_addr_table_eui64(index):
         if index < 16:
             return (t.EmberEUI64.convert("ff:ff:ff:ff:ff:ff:ff:ff"),)
-        elif 16 <= index <= 17:
+        elif 16 <= index <= 18:
             return (
                 {
                     16: t.EmberEUI64.convert("cc:cc:cc:ff:fe:e6:8e:ca"),
                     17: t.EmberEUI64.convert("ec:1b:bd:ff:fe:2f:41:a4"),
+                    18: t.EmberEUI64.convert("00:00:00:00:00:00:00:00"),
                 }[index],
             )
         else:
diff --git a/tests/test_ezsp_protocol.py b/tests/test_ezsp_protocol.py
index 94595378..ebb43808 100644
--- a/tests/test_ezsp_protocol.py
+++ b/tests/test_ezsp_protocol.py
@@ -121,3 +121,14 @@ async def test_get_free_buffers(prot_hndl, status, raw, expected_value):
             assert free_buffers is expected_value
         else:
             assert free_buffers == expected_value
+
+
+async def test_unknown_command(prot_hndl, caplog):
+    """Test receiving an unknown command."""
+
+    unregistered_command = 0x04
+
+    with caplog.at_level(logging.WARNING):
+        prot_hndl(bytes([0x00, 0x00, unregistered_command, 0xAB, 0xCD]))
+
+        assert "0x0004 received: b'abcd' (b'000004abcd')" in caplog.text