hi, My test env is dell T430 server, NIC is intel 82599ES. I integrate my app with dpdk-17.05.1 version. after do some tcp traffic testing, app can receive packets from the 82599 NIC, but 82599 NIC send packets failed. But my app with dpdk-17.02 works well. If any change with ixgbe driver? or need some additional configuration for the NIC? Thanks. -- Best Regards, zimeiw &\y&rtx m;ӍM{EnsڶZXלg'E~&לg'dלg'};Ѽ(DL`+uݥ({m ׽;ӍM!M{j{! D4 X')^[B,@ \,TN2-s(D#L^]\TN0}7Edjwt^qyۧz0]7}M{Ͷ}8d^qykz0q :k\y&r}tMѼƥ-+aD礇ܯ*myԌL6^N5M4z+uz-z&y&r}tMvǴ;^rDL9ӏvd{m ׽wӍ|O4czZ)y-s(yǢ_ƥ-&j)ƥv}t}z^o+3kiӬy&rrhy?"13wm5O6]m:ߎ_6^N6yקqb ʥ\bˬ*'ׯvd T˛mmvd?_بz[huzivJ+˛-