When I create an ACL table through ODL client and then try reading its operational data,
the response is:
code 404 data-missing

and the log shows:
Unexpected exception during netconf operation execution
java.lang.NullPointerException: Invalid instance identifier /(urn:opendaylight:params:xml:ns:yang:vpp:classifier?revision=2016-12-14)vpp-classifier-state/classify-table. Cannot create BA equivalent.

However the table is visible in VAT output:
vat# classify_table_info table_id 0
{
"sessions": 0,
"nexttbl": -1,
"nextnode": -1,
"nbuckets": 1,
"skip": 0,
"match": 1,
"mask": "000000000000ffffffffffff00000000"
}

The same sequence sent directly to Honeycomb's Restconf works with no issues.

See attachments for the Restconf requests, resulting Netconf messages and Honeycomb log.