When converting responses received from a SNMPv1 entity acting in an agent role into responses sent to a SNMPv2 entity acting in a manager role:
If a GetResponse-PDU is received with an error-status field having a value of `tooBig', the proxy agent will remove the contents of the variable-bindings field before propagating the response. Note that even though a SNMPv2 entity will never generate a `tooBig' in response to a GetBulkRequestPDU, the proxy agent must propagate such a response.