panic(cpu 0 caller 0x0035BEAC): freeing free mbuf
Backtrace, Format - Frame : Return Address (4 potential args on stack) 
0x1401bdb8 : 0x128d1f (0x3c9540 0x1401bddc 0x131df4 0x0) 
0x1401bdf8 : 0x35beac (0x3e9c7c 0x3000006 0x450 0x0) 
0x1401be38 : 0x7124a4 (0x2603da00 0x0 0x127bc000 0x127bc000) 
0x1401be58 : 0xa4d454 (0x127bc000 0x2603da00 0x0 0x2) 
0x1401be88 : 0xa4bad0 (0x127bc000 0x2603da00 0x0 0x2899880) 
0x1401bea8 : 0xa4ed7c (0x127bc000 0x0 0x40000000 0x133b25) 
0x1401bf08 : 0x398a1f (0x127bc000 0x2899880 0x1 0x27773d0) 
0x1401bf58 : 0x397bf1 (0x2899880 0x135ec3 0x0 0x27773d0) 
0x1401bf88 : 0x397927 (0x28a3e00 0x0 0x450 0x1303) 
0x1401bfc8 : 0x19a74c (0x28a3e00 0x0 0x8 0x207) Backtrace terminated-invalid frame pointer 0x0
      Kernel loadable modules in backtrace (with dependencies):
         com.apple.iokit.AppleYukon(1.0.7b3)@0xa49000
            dependency: com.apple.iokit.IONetworkingFamily(1.5.1)@0x70b000
            dependency: com.apple.iokit.IOPCIFamily(2.1)@0x57f000
         com.apple.iokit.IONetworkingFamily(1.5.1)@0x70b000