Some failed SQL queries executed during the bootstrap process resulted in a generic "Unknown error" message instead of reporting the original error message received from the MySQL server.
As a workaround, setting level=DEBUG during bootstrap yielded these SQL errors. (Bug #27721898)
Some unexpected errors from the MySQL server were not shown during the Router bootstrap process. (Bug #27721834)
Router failed to compile on Alpine Linux 3.6, or on Raspberry Pi Zero or One (ARMV6). (Bug #27697883, Bug #27697767)
max_connect_errorsoption did not function in v8.0.4. (Bug #27564958)
Bootstrapping would only function if
--bootstrapwas the first command-line argument. Now the argument order is irrelevant. (Bug #25054974)