Cisco IOS-XE `show vlans` throws error if `IPv6` is returned

[gertzakis]

ISSUE TYPE

• Template Issue with error and raw data
• Bug Report with the library
• Feature - This is only relevant to the library, not templates
• Documentation Report

TEMPLATE USING

Value Required VLAN_ID (\d+)
Value List INTERFACES ([\w\./-]+)
Value List IP_ADDRESSES (\S+)

Start
  ^VLAN\s+ID:\s+${VLAN_ID} -> Data
  ^Virtual\s+LAN\s+ID\:\s+${VLAN_ID} -> Data
  ^No\s+Virtual\s+LANs\s+configured
  ^\s*$$
  ^. -> Error

Data
  ^Virtual\s+LAN\s+ID\:\s+\d.* -> Continue.Record
  ^Virtual\s+LAN\s+ID\:\s+${VLAN_ID}.*
  ^VLAN\s+ID:\s+\d+ -> Continue.Record
  ^VLAN\s+ID:\s+${VLAN_ID}
  ^\s+This\s+is\s+configured\s+as\s+native\s+Vlan\s+for\s+the\s+following\s+interface\(s\)\s+:\s*$$
  ^\S+(\s+Native-vlan\s+Tx-type:\s+\S+)?\s*$$
  ^\s+Protocols\s+Configured
  ^\s+IP\s+\d+\s+\d+
  ^\s+MPLS\s+\d+\s+\d+
  ^\s+MPLS\:\s+\S+
  ^\s+[vV]LAN\s+Trunk\s+Interfaces?\:\s+${INTERFACES} -> Interface
  ^VLAN\s+trunk\s+interfaces -> Interface
  ^[\w\./]+\s*$$
  ^${INTERFACES}\s+\(\d+\)\s*$$
  ^\s+IP:\s+${IP_ADDRESSES}\s*$$
  ^\s+IP\s+${IP_ADDRESSES}\s+\d+\s+\d+
  ^\s+Other\s+\d+\s+\d+
  ^\s+Total\s\d+
  ^\s+\d+\s+packets,
  ^\s*$$
  ^. -> Error Data

Interface
  ^\s*${INTERFACES}\s*$$
  ^\s*\S+\s+\(\S+\)$$
  ^\s+Total\s+\d+\s+
  ^\s+IP\:\s+${IP_ADDRESSES}
  ^\s+MPLS\:\s+
  ^\s+Protocols\s+Configured\: -> Data
  ^\s+This\s+is\s+configured\s+as\s+native\s+Vlan -> Data
  ^Virtual\s+LAN\s+ID\:\s+\d.* -> Continue.Record
  ^Virtual\s+LAN\s+ID\:\s+${VLAN_ID}.* -> Data
  ^VLAN\s+ID:\s+\d+ -> Continue.Record
  ^VLAN\s+ID:\s+${VLAN_ID} -> Data
  ^. -> Error Interface

SAMPLE COMMAND OUTPUT

VLAN ID: 3084 (IEEE 802.1Q Encapsulation)

   Protocols Configured:          Received:        Transmitted:
                     IP         1379273851          1393511050

VLAN trunk interfaces for VLAN ID 3084:
HundredGigE2/0/0.3084

HundredGigE2/0/0.3084 (3084)

                     IP: 10.247.62.37

      Total 1379277713 packets, 120663875433 bytes input
      Total 1393518607 packets, 188818944216 bytes output
      Total 0 oversubscription packet drops

VLAN ID: 1 (IEEE 802.1Q Encapsulation)

 This is configured as native Vlan for the following interface(s) :
HundredGigE2/0/0    Native-vlan Tx-type: Untagged
TenGigabitEthernet2/1/8    Native-vlan Tx-type: Untagged
TenGigabitEthernet2/1/9    Native-vlan Tx-type: Untagged
Port-channel10    Native-vlan Tx-type: Untagged
Port-channel30    Native-vlan Tx-type: Untagged

   Protocols Configured:          Received:        Transmitted:
                     IP      6541368380841       6472616296020
                   IPv6         8274039002         30233393091

VLAN trunk interfaces for VLAN ID 1:
HundredGigE2/0/0

HundredGigE2/0/0 (1)

                     IP: 10.247.53.229

      Total 1115482 packets, 416350865 bytes input
      Total 1115506 packets, 416321434 bytes output
      Total 0 oversubscription packet drops
TenGigabitEthernet2/1/8

TenGigabitEthernet2/1/8 (1)

                     IP: 10.247.52.197

      Total 1022659290 packets, 56136462971 bytes input
      Total 879480 packets, 333859004 bytes output
      Total 0 oversubscription packet drops
TenGigabitEthernet2/1/9

TenGigabitEthernet2/1/9 (1)


      Total 9 packets, 6477 bytes input
      Total 89558 packets, 6895966 bytes output
      Total 0 oversubscription packet drops
Port-channel10

Port-channel10 (1)


      Total 201486441 packets, 25752365485 bytes input
      Total 91564 packets, 7050428 bytes output
Port-channel30

Port-channel30 (1)

                     IP: 10.247.58.138
                   IPv6: FE80::4

      Total 120827408 packets, 15556961031 bytes input
      Total 811792 packets, 67689708 bytes output

SUMMARY

EXPECTED RESULTS

Expected to render the template and get data.

ACTUAL RESULTS

The rendering failed with error

"Error: Data. Rule Line: 33. Input Line:                    IPv6         8274039002         30233393091."