I am learning how to use DNS-SD from swift and have created a basic CLI app, however I am not getting callback results. I can get results from cli. Something I am doing wrong here? dns-sd -G v6 adet.local 10:06:08.423 Add 40000002 22 adet.local. FE80:0000... dns-sd -B _adt._udp. 11:19:10.696 Add 2 22 local. _adt._udp. adet import Foundation import dnssd var reference: DNSServiceRef? func dnsServiceGetAddrInfoReply(ref: DNSServiceRef?, flags: DNSServiceFlags, interfaceIndex: UInt32, errorCode: DNSServiceErrorType, hostname: UnsafePointer<CChar>?, address: UnsafePointer<sockaddr>?, ttl: UInt32, context: UnsafeMutableRawPointer?) { print("GetAddr'd") print(hostname.debugDescription.utf8CString) print(address.debugDescription.utf8CString) } var error = DNSServiceGetAddrInfo(&reference, 0, 0, DNSServiceProtocol(kDNSServiceProtocol_IPv6), "adet.local", dnsServiceGetAddrInfoReply, nil) print("GetAddr: \(error)") func dnsServiceBrowseReply(ref: DNSServiceRef?, flags: DNSServiceFlags, interfaceIndex: UInt32, errorCode: DNSServiceErrorType, serviceName: UnsafePointer<CChar>?, regType: UnsafePointer<CChar>?, replyDomain: UnsafePointer<CChar>?, context: UnsafeMutableRawPointer?) { print("Browsed") print(serviceName.debugDescription.utf8CString) print(replyDomain.debugDescription.utf8CString) } error = DNSServiceBrowse(&reference, 0, 0, "_adt._udp", nil, dnsServiceBrowseReply, nil) print("Browse: \(error)") Foundation.RunLoop.main.run() Info.plist <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>NSLocalNetworkUsageDescription</key> <string>By the Hammer of Grabthor</string> <key>NSBonjourServices</key> <array> <string>_adt._udp.</string> <string>_http._tcp.</string> <string>_http._tcp</string> <string>_adt._udp</string> </array> </dict> </plist>

I am making a USB attached IoT device that follows the Matter approach to connectivity (IP/mDNS/DHCP). I am having conflicts with it as it appears to MacOS as an Ethernet adapter and this is causing it to be assigned as a "default" route, interfering with routing when my Mac is connected to NAT based WiFi. I'd like to be able to hint to MacOS & iPadOS that this is not a routable private network, the subnet should be respected and a default route should not be assigned to it, otherwise the order of the device connection is used by the IP routing tables and I am concerned my non-routable private network will initialize before Wifi and block NAT based internet connectivity. How can I hint to MacOS/iPadOS "this is not a routable private network, this is not a NAT, do not assign me a default route beyond the subnet I have provided you."

I am developing a USB networking accessory using the CDC ECM or NCM protocol and I would like to know what are the MacOS and iPadOS requirements to connect to such a device. I have a prototype CDC ECM device developed that uses static IPv4 addressing which I can connect to an Arch Linux host and ping, but I am unable to have the same success from my Mac Studio M1 running Sequoia 15.1.1. The device shows up under 'Other Services' with 'Not connected' status, whether I leave it with the default settings or change it to 'Configure IPv4 -> Manually' and then set the appropriate IP address / Subnet mask / Router. From a discussion on Github, it seems that the ECM device must support NetworkConnection notification in order to work with MacOS. Can you point me to where this is documented and whether there are other expectations/requirements around USB network adapters? My end goal is to make an embedded device that communicates to MacOS and iPadOS devices/apps over USB CDC NCM with a simple UDP socket listener. Thank you in advance for any help you can provide.