When list have binary type key it's not possible to write item to this list because its thrown error message:

{
"errors": {
"error": [

{ "error-type": "protocol", "error-tag": "invalid-value", "error-message": "The value '[B@514641da' for key 'lldpLocManAddr' specified in the URI doesn't match the value '[B@5f81a45a' specified in the message body. " }

]
}
}

This is caused in class \netconf\restconf\sal-rest-connector\src\main\java\org\opendaylight\netconf\sal\restconf\impl\RestconfImpl.java.
There is check if key is also present in message body but it fails on comparison of byte arrays even when arrays have equal content.

Tested on version 1.5.0-Carbon.