| OID | Object | Syntax | Max Access | Description | Implemented Specifications | 
|---|---|---|---|---|---|
| 1.3.6.1.4.1.2011.5.25.41.1.20.4 | hwIpv6IfChangeDownReason | INTEGER{interfaceIsDown(1),ipv6AddressUnavailable(2),ipv6AddressAvailable(3),pppIpcp6Down(4),disableIpv6ProtocolorDeleteInterface(6)} | read-only | The reason code of link changes. | The actually supported access is accessible-for-notify. This object is used only as a VB bound variable of the alarm. |