The official pt-upgrade documentation doesn't list tcpdump as supported type,
but it is referenced under "USAGE" and several other sections.
type: string; default: slowlog
Type of log files. Valid types are:
VALUE LOG TYPE =======
slowlog MySQL slow log
genlog MySQL general log
binlog MySQL binary log (converted by mysqlbinlog)
rawlog Custom log with one SQL statement per line
pt-upgrade [OPTIONS] LOGS|RESULTS DSN [DSN]
pt-upgrade executes queries in the given MySQL LOGS on each DSN, compares the results, and reports any significant differences. The tool can also save the results for later analyses. LOGS can be slow, general, binary, tcpdump, and “raw”.
It is also listed as an option in pt-upgrade --help:
Expected: --type parameter section listing tcpdump as available option.