ncclient Filters Causing RPC reply to be empty

Question

I'm trying to use Netconf on Cisco IOS XE Router This one Here it's Public but Whenever I use a filter on my commands of get_config , edit_config or get I get an error. This is is on Cisco iox XE version 17.3. The get_config command does work if no filter is applied output shown here.

I have tried this on 16.9.3 on cisco ios xe and the I used the same code and it didn't give me errors. Have I just misunderstood how pyang or xml works?

What I can do Right now is connect to the router and get the config without a filter but When I try a filter I get this error:

ncclient.operations.rpc.RPCError: {'type': 'protocol', 'tag': 'unknown-element', 'app_tag': None, 'severity': 'error', 'info': 'filter\n\n', 'path': '\n /rpc/get-config\n ', 'message': None}

What my code looks like for get_config

router = manager.connect(
    host="sandbox-iosxe-latest-1.cisco.com",
    port=830,
    username="admin",
    password="C1sco12345",
    hostkey_verify=False
)

filter2 = """
<filter>
    <native xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-native" />
    
</filter>
"""

netconf = router.get_config(source="running", filter=filter2)

For edit_config I'm just doing hostname to keep it simple. Here is the code:

netconfnewhostname = """
<config>
  <native xmlns="http://cisco.com/ns/yang/Cisco-IOS-XE-native">
     <hostname>DangledwasHere</hostname>
  </native>
</config>
"""

netconf_reply = router.edit_config(netconfnewhostname, target="running")
print(xml.dom.minidom.parseString(netconf_reply.xml).toprettyxml())

And Finally for get command:

netconf_filterinterface = """
<filter>
  <interfaces xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces"/>
</filter>
"""
netconfinterfaces = router.get(filter=netconf_filterinterface)

Answer 1

I suspect you should specify namespace as for <filter xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">