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Catalyst 9400 running 16.6.4 may see the following log message: %IOSXE-3-PLATFORM: R0/0: kernel: cpld_ngmod_ioctl_env_dewar_read (line 2209): %IOSXE-3-PLATFORM: R0/0: kernel: bus: 47 addr 8c failed to read dewar reg
9400 running 16.6.x running dual supervisor
Reseating power supply(s).
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