It is common to set up automated error reporting based on `ERROR` and
potentially also `WARN` logs. Whilst GSO being unsupported is certainly
something worthwhile logging, the `ERROR` log level seems a bit
excessive and leads to unactionable errors reports.

The system can still operate with `max_gso_segments == 1`. As such, this
codepath "merely" indicates a state change in the system but not a fatal
error. As such, logging this on INFO level seems more appropriate.

Logging AND returning errors is considered an anti-pattern because it
leads to duplicate logs.