FreeBSD 11.1-STABLE #0 r325465: Sun Nov  5 22:20:21 CST 2017
FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512

iwn0: <Intel Centrino Ultimate-N 6300> mem 0xd3300000-0xd3301fff irq 19 at device 0.0 on pci4
iwn0: iwn_read_firmware: ucode rev=0x09dd0401
iwn0: 
device timeout
iwn0: 
iwn_read_firmware: ucode rev=0x09dd0401
wlan0: link state changed to UP
iwn0: iwn_intr: fatal firmware error
firmware error log:
  error type      = "BAD_COMMAND" (0x00000007)
  program counter = 0x00000D38
  source line     = 0x00000463
  error data      = 0x0000000000000000
  branch link     = 0x00000D3600000D36
  interrupt link  = 0x0000153200000000
  time            = 58281
driver status:
  tx ring  0: qid=0  cur=0   queued=0  
  tx ring  1: qid=1  cur=0   queued=0  
  tx ring  2: qid=2  cur=0   queued=0  
  tx ring  3: qid=3  cur=2   queued=0  
  tx ring  4: qid=4  cur=63  queued=0  
  tx ring  5: qid=5  cur=0   queued=0  
  tx ring  6: qid=6  cur=0   queued=0  
  tx ring  7: qid=7  cur=0   queued=0  
  tx ring  8: qid=8  cur=0   queued=0  
  tx ring  9: qid=9  cur=0   queued=0  
  tx ring 10: qid=10 cur=0   queued=0  
  tx ring 11: qid=11 cur=0   queued=0  
  tx ring 12: qid=12 cur=0   queued=0  
  tx ring 13: qid=13 cur=0   queued=0  
  tx ring 14: qid=14 cur=0   queued=0  
  tx ring 15: qid=15 cur=0   queued=0  
  tx ring 16: qid=16 cur=0   queued=0  
  tx ring 17: qid=17 cur=0   queued=0  
  tx ring 18: qid=18 cur=0   queued=0  
  tx ring 19: qid=19 cur=0   queued=0  
  rx ring: cur=31
iwn0: iwn_panicked: controller panicked, iv_state = 5; restarting
wlan0: link state changed to DOWN
iwn0: iwn_read_firmware: ucode rev=0x09dd0401
wlan0: link state changed to UP
wlan0: link state changed to DOWN
iwn0: device timeout
iwn0: iwn_read_firmware: ucode rev=0x09dd0401
wlan0: link state changed to UP
wlan0: link state changed to DOWN
iwn0: device timeout
iwn0: iwn_read_firmware: ucode rev=0x09dd0401