
NULL sockets are used for NDP, BOOTP, and other critical operations. If the topmost mbuf in a NULL session is blocked pending resolution, it may cause problems if it blocks other packets with a NULL socket. So do not add mbufs with a NULL socket field to the same session. Signed-off-by: Kevin Cernekee <cernekee@chromium.org> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>