Question on creating Firewall Rules: [using AzureNextGen] So I am aiming to turn on 'System assigned managed identity' for an App Service (Web API). I added a firewall rule to allow as follows:

// SQLDB FIREWALL EXCEPTIONS
       Output<List<FirewallRule>>? list = app.OutboundIpAddresses.Apply(
            ips => ips.Split(",").Select(
                ip => new FirewallRule($"{ip}", new FirewallRuleArgs
                {
                    FirewallRuleName = SQLSVRFIREWALLRULENAME,
                    ResourceGroupName = resourceGroup.Name,
                    ServerName = DBSERVERNAME,
                    StartIpAddress = "0.0.0.0",
                    EndIpAddress = "0.0.0.0"
                })
            ).ToList());

It sort of works but i think it's adding in more rules than what I need due to the select statement. So my questions is: Am I going about this the right way? If so , how do I add a single Firewall Rule to implement System assigned MI?

Why do you need IP here? You can just create a single rule like you have now (0.0.0.0 to 0.0.0.0) regardless of IP addresses of the web app..