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1 18:10:20.233776 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto GRE (47), length 54)
253.120.2.55 > 192.168.1.1: GREv0, Flags [none], length 34
IS-IS, length 30
L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
Instance Identifier TLV #7, length: 0 [|isis]
2 18:10:20.286769 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto GRE (47), length 54)
234.176.145.73 > 192.168.1.1: GREv0, Flags [none], length 34
IS-IS, length 30
L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
Instance Identifier TLV #7, length: 0 [|isis]
3 18:10:20.346738 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto GRE (47), length 54)
225.91.211.91 > 192.168.1.1: GREv0, Flags [none], length 34
IS-IS, length 30
L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
Instance Identifier TLV #7, length: 0 [|isis]
4 18:10:20.406704 IP (tos 0x0, ttl 128, id 0, offset 0, flags [DF], proto GRE (47), length 54)
160.196.17.46 > 192.168.1.1: GREv0, Flags [none], length 34
IS-IS, length 30
L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
Instance Identifier TLV #7, length: 0 [|isis]
5 18:10:20.466677 IP (tos 0x0, ttl 128, id 0, offset 0, flags [DF], proto GRE (47), length 54)
246.181.173.63 > 192.168.1.1: GREv0, Flags [none], length 34
IS-IS, length 30
L1 LSP, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (6), max-area: 7 (7)
lsp-id: ffff.ffff.ffff.ff-ff, seq: 0xffffffff, lifetime: 65535s
chksum: 0xffff (incorrect should be 0x0fe8), PDU length: 65535, Flags: [ L1 IS ]
Instance Identifier TLV #7, length: 0 [|isis]
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