1 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto GRE (47), length 54)
2 253.120.2.55 > 192.168.1.1: GREv0, Flags [none], length 34
4 L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
5 lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
6 chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
7 IS Neighbor(s) (variable length) TLV #7, length: 0
9 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto GRE (47), length 54)
10 234.176.145.73 > 192.168.1.1: GREv0, Flags [none], length 34
12 L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
13 lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
14 chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
15 IS Neighbor(s) (variable length) TLV #7, length: 0
17 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto GRE (47), length 54)
18 225.91.211.91 > 192.168.1.1: GREv0, Flags [none], length 34
20 L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
21 lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
22 chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
23 IS Neighbor(s) (variable length) TLV #7, length: 0
25 IP (tos 0x0, ttl 128, id 0, offset 0, flags [DF], proto GRE (47), length 54)
26 160.196.17.46 > 192.168.1.1: GREv0, Flags [none], length 34
28 L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
29 lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
30 chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
31 IS Neighbor(s) (variable length) TLV #7, length: 0
33 IP (tos 0x0, ttl 128, id 0, offset 0, flags [DF], proto GRE (47), length 54)
34 246.181.173.63 > 192.168.1.1: GREv0, Flags [none], length 34
36 L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
37 lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
38 chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
39 IS Neighbor(s) (variable length) TLV #7, length: 0