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fix(inputs.netflow): Fallback to IPFIX mappings for Netflow v9 #14910

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Mar 4, 2024
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fix(inputs.netflow): Fallback to IPFIX mappings for Netflow v9 #14910

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15 changes: 15 additions & 0 deletions plugins/inputs/netflow/netflow_decoder.go
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Original file line number Diff line number Diff line change
Expand Up @@ -706,6 +706,21 @@ func (d *netflowDecoder) decodeValueV9(field netflow.DataField) ([]telegraf.Fiel
return fields, nil
}

// Fallback to IPFIX mappings as some devices seem to send IPFIX elements in
// Netflow v9 packets. See https://github.com/influxdata/telegraf/issues/14902
// and https://github.com/influxdata/telegraf/issues/14903.
if mappings, found := fieldMappingsIPFIX[elementID]; found {
var fields []telegraf.Field
for _, m := range mappings {
v, err := m.decoder(raw)
if err != nil {
return nil, err
}
fields = append(fields, telegraf.Field{Key: m.name, Value: v})
}
return fields, nil
}

// Return the raw data if no mapping was found
key := fmt.Sprintf("type_%d", elementID)
if !d.logged[key] {
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