dmesg | tail -n20
[    6.443557] r8169 0000:25:00.0 enp37s0: link up
[    6.443571] IPv6: ADDRCONF(NETDEV_CHANGE): enp37s0: link becomes ready
[ 3022.774070] EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null)
[ 3811.839342] rejected connection: IN=enp37s0 OUT= MAC=14:2d:27:50:4c:21:00:0f:04:b3:74:4a:08:00 SRC=192.168.88.87 DST=192.168.88.49 LEN=52 TOS=0x00 PREC=0x00 TTL=128 ID=1784 DF PROTO=TCP SPT=49240 DPT=62078 WINDOW=8192 RES=0x00 SYN URGP=0
[ 3816.161393] rejected connection: IN=enp37s0 OUT= MAC=14:2d:27:50:4c:21:00:0f:04:b3:74:4a:08:00 SRC=192.168.88.87 DST=192.168.88.49 LEN=52 TOS=0x00 PREC=0x00 TTL=128 ID=1977 DF PROTO=TCP SPT=49239 DPT=32007 WINDOW=8192 RES=0x00 SYN URGP=0
[ 3816.421432] rejected connection: IN=enp37s0 OUT= MAC=14:2d:27:50:4c:21:00:0f:04:b3:74:4a:08:00 SRC=192.168.88.87 DST=192.168.88.49 LEN=52 TOS=0x00 PREC=0x00 TTL=128 ID=1980 DF PROTO=TCP SPT=49240 DPT=62078 WINDOW=8192 RES=0x00 SYN URGP=0
[ 3817.394188] rejected connection: IN=enp37s0 OUT= MAC=14:2d:27:50:4c:21:00:0f:04:b3:74:4a:08:00 SRC=192.168.88.87 DST=192.168.88.49 LEN=48 TOS=0x00 PREC=0x00 TTL=128 ID=2066 DF PROTO=TCP SPT=49239 DPT=32007 WINDOW=8192 RES=0x00 SYN URGP=0
[ 3817.394215] rejected connection: IN=enp37s0 OUT= MAC=14:2d:27:50:4c:21:00:0f:04:b3:74:4a:08:00 SRC=192.168.88.87 DST=192.168.88.49 LEN=48 TOS=0x00 PREC=0x00 TTL=128 ID=2067 DF PROTO=TCP SPT=49238 DPT=80 WINDOW=8192 RES=0x00 SYN URGP=0
[ 3817.394227] rejected connection: IN=enp37s0 OUT= MAC=14:2d:27:50:4c:21:00:0f:04:b3:74:4a:08:00 SRC=192.168.88.87 DST=192.168.88.49 LEN=48 TOS=0x00 PREC=0x00 TTL=128 ID=2068 DF PROTO=TCP SPT=49240 DPT=62078 WINDOW=8192 RES=0x00 SYN URGP=0
[ 6215.877072] ath9k: ath9k: Driver unloaded
[ 6222.151360] ath: EEPROM regdomain: 0x809c
[ 6222.151361] ath: EEPROM indicates we should expect a country code
[ 6222.151362] ath: doing EEPROM country->regdmn map search
[ 6222.151363] ath: country maps to regdmn code: 0x52
[ 6222.151364] ath: Country alpha2 being used: CN
[ 6222.151364] ath: Regpair used: 0x52
[ 6222.151398] nommu_map_single: overflow 294f29040+1926 of device mask ffffffff
[ 6222.151402] ath: phy1: dma_mapping_error() on RX init
[ 6222.151446] ath9k 0000:26:00.0: Failed to initialize device
[ 6222.151515] ath9k: probe of 0000:26:00.0 failed with error -12