Add support for MultiSubnetFailover connection property - #357
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When the MultiSubnetFailover=Yes property is added to the connection string, the TCP connection should be attempted for each resolved IP address in parallel rather than in sequence. This creates a race where the first connection to be established wins and becomes the target server. https://learn.microsoft.com/en-us/sql/relational-databases/native-client/features/sql-server-native-client-support-for-high-availability-disaster-recovery?view=sql-server-ver15#connecting-with-multisubnetfailover
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This was referenced Aug 29, 2026
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When the MultiSubnetFailover=Yes property is added to the connection string, the TCP connection should be attempted for each resolved IP address in parallel rather than in sequence. This creates a race where the first connection to be established wins and becomes the target server.
https://learn.microsoft.com/en-us/sql/relational-databases/native-client/features/sql-server-native-client-support-for-high-availability-disaster-recovery?view=sql-server-ver15#connecting-with-multisubnetfailover
#356