On Mon, Nov 21, 2022 at 02:13:37PM +0100, Santiago Ruano Rincón wrote: > ZLP for DisplayLink ethernet devices was enabled in 6.0: > 266c0190aee3 ("net/cdc_ncm: Enable ZLP for DisplayLink ethernet devices"). > The related driver_info should be the "same as cdc_ncm_info, but with > FLAG_SEND_ZLP". However, set_rx_mode that enables handling multicast > traffic was missing in the new cdc_ncm_zlp_info. > > usbnet_cdc_update_filter rx mode was introduced in linux 5.9 with: > e10dcb1b6ba7 ("net: cdc_ncm: hook into set_rx_mode to admit multicast > traffic") > > Without this hook, multicast, and then IPv6 SLAAC, is broken. > > Fixes: 266c0190aee3 ("net/cdc_ncm: Enable ZLP for DisplayLink ethernet > devices") This needs to all be on one line. > With no blank line here. thanks, greg k-h