Manual Pages  — RGEPHY

In order to get a list of media types and options supported by a specific instance of the rgephy driver, run ifconfig -m on the instance of its parent MAC driver.

Additionally, the rgephy driver supports the following special media option:

flag0

When manually setting media type and options via ifconfig(8), the rgephy driver by default also triggers an autonegotiation advertising the selected media. This is done in order to work around hardware issues in certain scenarios. It is believed that this behavior does not cause harm in general but in fact can have an adverse effect in edge cases. In order to manually set the media type and options without also triggering an autonegotiation, the rgephy driver allows to turn this behavior off via the flag0 media option.