On Mon, Jun 15, 2020 at 12:35:30AM +0200, Heiner Kallweit wrote: > Seems that disabling ETHTOOL_NETLINK for PHYLIB=m has (at least) one > more side effect. I just saw that ifconfig doesn't report LOWER_UP > any longer. Reason seems to be that the ioctl fallback supports > 16 bits for the flags only (and IFF_LOWER_UP is bit 16). > See dev_ifsioc_locked().
I don't think this is related to CONFIG_ETHTOOL_NETLINK; AFAIK ifconfig does not use netlink at all and device flags are certainly not passed via ethtool netlink. Michal
