WNDR4300时不时断网，日志有下列错误，怎样解决呢

ramb***

Mon May  2 08:04:11 2022 kern.info kernel: [ 5580.552007] Atheros AR8216/AR8236/AR8316 mdio.0:00: Port 5 is down
Mon May  2 08:04:20 2022 kern.info kernel: [ 5589.911588] Atheros AR8216/AR8236/AR8316 mdio.0:00: Port 5 is up
Mon May  2 08:04:49 2022 kern.info kernel: [ 5619.031860] Atheros AR8216/AR8236/AR8316 mdio.0:00: Port 5 is down
Mon May  2 08:04:59 2022 daemon.err uhttpd[2514]: cat: can't open '/sys/class/thermal/thermal_zone0/temp': No such file or directory
Mon May  2 08:04:59 2022 daemon.err uhttpd[2514]: expr: syntax error
Mon May  2 08:05:00 2022 daemon.err uhttpd[2514]: cat: can't open '/sys/class/thermal/thermal_zone0/temp': No such file or directory
Mon May  2 08:05:00 2022 daemon.err uhttpd[2514]: expr: syntax error
Mon May  2 08:05:09 2022 kern.info kernel: [ 5638.791032] Atheros AR8216/AR8236/AR8316 mdio.0:00: Port 5 is up
Mon May  2 08:05:20 2022 kern.info kernel: [ 5649.191380] Atheros AR8216/AR8236/AR8316 mdio.0:00: Port 5 is down
Mon May  2 08:05:21 2022 kern.info kernel: [ 5650.230936] Atheros AR8216/AR8236/AR8316 mdio.0:00: Port 5 is up
Mon May  2 08:06:04 2022 daemon.err uhttpd[2514]: cat: can't open '/sys/class/thermal/thermal_zone0/temp': No such file or directory
Mon May  2 08:06:04 2022 daemon.err uhttpd[2514]: expr: syntax error
Mon May  2 08:07:00 2022 daemon.err uhttpd[2514]: cat: can't open '/sys/class/thermal/thermal_zone0/temp': No such file or directory
Mon May  2 08:07:00 2022 daemon.err uhttpd[2514]: expr: syntax error