On Mon, 8 Aug 2022 16:49:44 +0200 Francesco Mancino <francesco.manc...@tutus.se> wrote:
> eth_dev_validate_mtu, introduced in 990912e676e, validates configured > MTU plus overhead against max_rx_pktlen. > Since TAP is a virtual device, it should support as big MTU as possible. > > Signed-off-by: Francesco Mancino <francesco.manc...@tutus.se> dev_info->min_rx_bufsize = 0; Thanks for your patience. Since tap is built on top of an existing kernel network device a more complete solution would be to query the kernel device to find out what its MTU is. Acked-by: Stephen Hemminger <step...@networkplumber.org>