[BUG] How can I use grpc api to delete a link between a mdr node and a wlan node

[jxGui]

Describe the bug
I use following code to try delete link,but it shows me no taptun which is created when using emane.
# 获取要删除的节点信息和link信息
destoried_node_id = node_id
#emane_net = core.get_node(session_id, cluster_id + 128)
wlan0_net_id = 3
node_ip4 = f"10.0.{cluster_id}.{node_id-8*(cluster_id-1)}"
delete_iface0 = Interface(id=1, name="eth0", ip4=node_ip4, ip4_mask=24)
delete_link0 = Link(node1_id=destoried_node_id, node2_id=wlan0_net_id, iface1=delete_iface0)

print("删除簇内连接")
if core.delete_link(session_id, delete_link0):
    print("簇内连接已删除 success")
else:
    print("簇内连接删除失败 fail")

The error shows:
Traceback (most recent call last):
File "/home/gjx/Desktop/SCEN/tool_functions.py", line 89, in
main()
File "/home/gjx/Desktop/SCEN/tool_functions.py", line 83, in main
destroy_node(1,1)
File "/home/gjx/Desktop/SCEN/tool_functions.py", line 29, in destroy_node
if core.delete_link(session_id, delete_link0):
File "/home/gjx/Documents/core/daemon/core/api/grpc/client.py", line 645, in delete_link
response = self.stub.DeleteLink(request)
File "/opt/core/venv/lib/python3.10/site-packages/grpc/_channel.py", line 1030, in call
return _end_unary_response_blocking(state, call, False, None)
File "/opt/core/venv/lib/python3.10/site-packages/grpc/_channel.py", line 910, in _end_unary_response_blocking
raise _InactiveRpcError(state) # pytype: disable=not-instantiable
grpc._channel._InactiveRpcError: <_InactiveRpcError of RPC that terminated with:
status = StatusCode.UNKNOWN
details = "Exception calling application: <core.emane.nodes.TunTap object at 0x7caea045d360>"
debug_error_string = "UNKNOWN:Error received from peer {created_time:"2024-05-23T12:53:40.461970024+08:00", grpc_status:2, grpc_message:"Exception calling application: <core.emane.nodes.TunTap object at 0x7caea045d360>"}"

Screenshots
This is my screenshot of Session:

Desktop (please complete the following information):

• OS: [e.g. Ubuntu 22.04]
• CORE Version [e.g. 9.0.3]
• EMANE Version [e.g. 1.5.1]

Additional context
Add any other context about the problem here.