1    1  2038-01-01 00:00:00.000000 UI 22! Pad! IS-IS, length 262138
2          L2 Lan IIH, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (0), max-area: 224 (224)
3            source-id: fe02.0000.d0f9,  holding time: 3928s, Flags: [unknown circuit type 0x00]
4            lan-id:    1000.4101.0000.88, Priority: 127, PDU length: 44959
5              unknown TLV #162, length: 1
6                    0x0000:  e2
7              IS Reachability TLV #2, length: 12
8                bogus virtual flag 0x07
9                IS Neighbor: 0100.1001.9de0.00, Default Metric: 34, Internal
10                      Delay Metric: 5, Internal
11                      Error Metric: 27, Internal
12              Authentication TLV #10, length: 1
13                unknown Authentication type 0x05:
14              unknown TLV #146, length: 32
15                    0x0000:  2020 2020 2020 2020 2020 2020 2020 2020
16                    0x0010:  2020 2020 2020 2020 2020 2220 2020 2020
17              unknown TLV #32, length: 32
18                    0x0000:  2000 0001 0020 2020 2020 2020 207f 0020
19                    0x0010:  2020 2020 2020 2020 2020 2e20 2020 20c9
20              unknown TLV #32, length: 32
21                    0x0000:  2020 2010 0020 2020 2020 0b20 2020 2020
22                    0x0010:  2020 2020 2020 8181 7281 8181 8181 8181
23              Multi-Topology-Aware Port Capability TLV #143, length: 129
24                 RES: 8, MTID(s): 385
25                 unknown subTLV #129, length: 68
26                 unknown subTLV #32, length: 32
27                 unknown subTLV #129, length: 129 (> containing TLV length) [|isis]
28