Nov 18, 2013 Why is mDNSResponder making this UPnP request? Is it possible the machine has been compromised? I have other Mavericks machines, but none directly connected via Ethernet (like this iMac). I'm currently using Little Snitch to deny connections from mDNSResponder to 192.168.1.1:1900, but I'd like to know the underlying cause to this problem. In short mdnsresponder is the system OS X uses to look up domain names to resolve them to IP addresses. Vstcrack.com safe time. It makes the internet & local networking work. Behringer ddm4000 traktor scratch pro. It handles 'bonjour' locally as well as remote DNS lookups. Software requirements for dev c++. Little Snitch will induce a heavy dose of paranoia unless you learn that Macs are fundamentally 'network based machines' nowadays.
Ever since upgrading to 10.5.7, I've had frequent, daily system crashes. I did an archive and install from the disks, then used the combo updater to 10.5.7. The console logs show that just prior to every crash, I have a lot of activity regarding the mDNSResponder for a few seconds. Any suggestions on what might be causing this? Currently I think it may be Little Snitch (2.1.4) interacting with something else. Logs are posted below.----
6/6/09 11:39:00 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:00 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:00 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:01 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:01 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:01 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:01 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:02 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:02 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:02 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:03 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:03 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:03 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:04 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:04 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:04 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
Mdnsresponder Little Snitch 2
6/6/09 11:39:05 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:05 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:05 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:06 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:06 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:06 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:07 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:07 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:08 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:08 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:08 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:09 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:09 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:09 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:10 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:10 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:10 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:11 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:11 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:12 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:12 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:12 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:13 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:13 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:13 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:14 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:14 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:14 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:14 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:15 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:15 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:15 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
![Mdnsresponder Little Snitch Mdnsresponder Little Snitch](/uploads/1/2/6/3/126342489/556313995.jpg)
6/6/09 11:39:16 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:16 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:16 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:17 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:17 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:17 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:17 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:18 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:18 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:19 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:19 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:19 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
Mdnsresponder Little Snitch Book
6/6/09 11:39:20 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:20 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:20 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:21 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:21 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:21 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:22 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:22 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:22 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:23 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:23 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements
6/6/09 11:39:23 AM mDNSResponder[16] mDNSPlatformUDPSocket: SetupSocket 5350 failed error -1 errno 48 (Address already in use)
6/6/09 11:39:24 AM mDNSResponder[16] CheckNATMappings: Failed to allocate port 5350 UDP multicast socket for NAT-PMP announcements