ASIM NetworkSession Parser: Critical IP Address Mapping Fix for Azure NSG Flow Data

What Changed

Fixed critical data fidelity bug in ASIM NetworkSession parsers for NTANetAnalytics that caused SrcIpAddr and DstIpAddr fields to return null when primary IP fields (SrcIp/DestIp) were empty but alternate fields (SrcPublicIps/DestPublicIps) contained valid data.

Parser Impact

Enhanced IP address mapping logic in both ASimNetworkSessionNTANetAnalytics and vimNetworkSessionNTANetAnalytics parsers with fallback mechanism:

• Primary mapping: Uses SrcIp/DestIp when available
• Fallback mapping: Uses first valid IP from SrcPublicIps/DestPublicIps when primary fields are empty
• Additional visibility: All PublicIPs arrays now preserved in AdditionalFields (SrcIpAddresses/DstIpAddresses)

Data Impact: Queries referencing SrcIpAddr/DstIpAddr against this parser previously returned null for flows where only PublicIPs were populated — this fixes that data blind spot and restores complete IP visibility for network session analysis.

Affected Files

Parsers/ASimNetworkSession/ARM/ASimNetworkSessionNTANetAnalytics/ASimNetworkSessionNTANetAnalytics.json
Parsers/ASimNetworkSession/ARM/vimNetworkSessionNTANetAnalytics/vimNetworkSessionNTANetAnalytics.json
Parsers/ASimNetworkSession/Parsers/ASimNetworkSessionNTANetAnalytics.yaml
Parsers/ASimNetworkSession/Parsers/vimNetworkSessionNTANetAnalytics.yaml