TurrisOS 5.3.3 randomly reboots

Ever since upgrade to 5.3.3 (TurrisOS 5.3.3 f14bc5cf5635edbb3ab2e29c14a260e2640e588f r11388+90-f14bc5cf56) the router started randomly restarting seemingly for no reason. The logs don’t provide any useful information:

2022-01-13 16:43:48 err kernel[]: [140204.639680] mvneta f1034000.ethernet eth2: bad rx status 0fa10000 (crc error), size=1405
2022-01-13 16:44:01 info crond[19693]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:44:01 info crond[19692]: (root) CMDEND (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:44:37 err kernel[]: [140254.041845] mvneta f1034000.ethernet eth2: bad rx status 0f810000 (crc error), size=1468
2022-01-13 16:44:40 err kernel[]: [140256.386651] mvneta f1034000.ethernet eth2: bad rx status 0fa10000 (crc error), size=1405
2022-01-13 16:44:43 err kernel[]: [140259.292264] mvneta f1034000.ethernet eth2: bad rx status 0fa10000 (crc error), size=1405
2022-01-13 16:45:01 info crond[19788]: (root) CMD (/usr/bin/notifier)
2022-01-13 16:45:01 info crond[19789]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:45:01 info crond[19787]: (root) CMDEND (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:45:01 info crond[19786]: (root) CMDOUT (There is no message to send.)
2022-01-13 16:45:01 info crond[19786]: (root) CMDEND (/usr/bin/notifier)
2022-01-13 16:45:05 err kernel[]: [140281.883495] mvneta f1034000.ethernet eth2: bad rx status 4fa10000 (crc error), size=117
2022-01-13 16:46:01 info crond[19893]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:46:01 info crond[19892]: (root) CMDEND (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:47:01 info crond[19972]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:47:01 info crond[19971]: (root) CMDEND (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:48:01 info crond[20061]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:48:01 info crond[20060]: (root) CMDEND (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:49:01 info crond[20145]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:49:01 info crond[20144]: (root) CMDEND (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:50:01 info crond[20232]: (root) CMD (/usr/bin/notifier)
2022-01-13 16:50:01 info crond[20233]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:50:01 info crond[20231]: (root) CMDEND (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:50:01 info crond[20230]: (root) CMDOUT (There is no message to send.)
2022-01-13 16:50:01 info crond[20230]: (root) CMDEND (/usr/bin/notifier)
2022-01-13 16:51:01 info crond[20344]: (root) CMD (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:51:01 info crond[20343]: (root) CMDEND (/usr/bin/rainbow_button_sync.sh)
2022-01-13 16:52:33 info kernel[]: [    0.000000] Booting Linux on physical CPU 0x0
2022-01-13 16:52:33 notice kernel[]: [    0.000000] Linux version 4.14.254 (packaging@turris.cz) (gcc version 7.5.0 (OpenWrt GCC 7.5.0 r11388+90-f14bc5cf56)) #0 SMP Fri Dec 10 08:30:43 2021
2022-01-13 16:52:33 info kernel[]: [    0.000000] CPU: ARMv7 Processor [414fc091] revision 1 (ARMv7), cr=10c5387d
2022-01-13 16:52:33 info kernel[]: [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
2022-01-13 16:52:33 info kernel[]: [    0.000000] OF: fdt: Machine model: Turris Omnia
2022-01-13 16:52:33 info kernel[]: [    0.000000] Memory policy: Data cache writealloc

Does anyone have any idea where I should be looking to troubleshoot?

does that happen randomly or after ISP disconnection?
My ISP disconnect after 24 hours and omnia crashes at that time sometimes.

I believe it’s unrelated to ISP. I’m actually behind another router which runs continuously without issues.