| Access | Type |
|---|---|
| readonly | icmpUnreachNet(1), icmpUnreachHost(2), icmpUnreachProtocol(3), icmpUnreachPort(4), icmpUnreachNeedFrag(5), icmpUnreachSrcFail(6), icmpUnreachNoNet(7), icmpUnreachNoHost(8), icmpUnreachHostIsolated(9), icmpUnreachNetProhib(10), icmpUnreachProhib(11), icmpUnreachNetTos(12), icmpUnreachHostTos(13), icmpUnreachAdmin(14), icmpUnreachHostPrec(15), icmpUnreachPrecedence(16), icmpUnknown(17), icmpTimeOut(18), icmpTTLExpired(19) |