Did a little more testing with the new kernels sent Network configuration: eth0 static IP, ping to alias eth0:0 eth1 dynamic, ping to eth1 3.13.0-37 3.16.0-16 eth0 eth1 eth0 eth1 coldboot y5 y6 y1 y unplug/plug 1 y5 y6 n2 y unplug/plug 2 y5 y7 - - softboot y5 y6 y3 y unplug/plug 1 n8 n8 n4 y unplug/plug 2 n9 n9 n4 y (y1) long time needed for first ping on eth0 + nic errors (only RX no TX + lost) ... see attachement: error_316016.txt (n2),(n4) No light at nic (eth0), ping is working !!, mii-tool no-link (y3) all lights on, nic errors (only RX no TX + lost) (y5) lost packets on eth0 (y6) no TX count on eth1 (only 2 packets) (y7) no-light on eth1, no TX count on eth1, ping is working ... see attachement: error_313037.txt (n8) no-light on eth0 (plugged eth1 first), no ping on eth0 and eth1 !! (n9) no-light on eth0 (plugged eth0 first), no ping on eth0 and eth1 !! ------------------------------------------------------------------------------------------------------------------------- Did Testing again with standard ubuntu kernel 3.13.0-35-generic to check unplug/plug with latest intel driver (igb-5.2.9.4) installed manually - driver is also screwed up (even worse) 3.13.0-35 eth0 eth1 coldboot y10 y unplug/plug 1 n11 n11 unplug/plug 2 n12 n12 softboot y13 y13 unplug/plug 1 n14 n14 unplug/plug 2 n15 n15 (y10) No TX count on eth0, nic errors (only RX no TX + lost) (n11) no ping on eth0 and eth1, no light on eth1 (plugged eth0 first) (n12) no ping on eth0 and eth1, no light on eth1 (plugged eth1 first) (y13) lost packets on eth0, no TX count on eth1 (n14) no ping on eth0 and eth1, no light on eth0 (plugged eth0 first) (n15) no ping on eth0 and eth1, no light on eth0 (plugged eth1 first) hope the output format ist posted with fixed spacing ... ?field.comment=Did a little more testing with the new kernels sent Network configuration: eth0 static IP, ping to alias eth0:0 eth1 dynamic, ping to eth1 3.13.0-37 3.16.0-16 eth0 eth1 eth0 eth1 coldboot y5 y6 y1 y unplug/plug 1 y5 y6 n2 y unplug/plug 2 y5 y7 - - softboot y5 y6 y3 y unplug/plug 1 n8 n8 n4 y unplug/plug 2 n9 n9 n4 y (y1) long time needed for first ping on eth0 + nic errors (only RX no TX + lost) ... see attachement: error_316016.txt (n2),(n4) No light at nic (eth0), ping is working !!, mii-tool no-link (y3) all lights on, nic errors (only RX no TX + lost) (y5) lost packets on eth0 (y6) no TX count on eth1 (only 2 packets) (y7) no-light on eth1, no TX count on eth1, ping is working ... see attachement: error_313037.txt (n8) no-light on eth0 (plugged eth1 first), no ping on eth0 and eth1 !! (n9) no-light on eth0 (plugged eth0 first), no ping on eth0 and eth1 !! ------------------------------------------------------------------------------------------------------------------------- Did Testing again with standard ubuntu kernel 3.13.0-35-generic to check unplug/plug with latest intel driver (igb-5.2.9.4) installed manually - driver is also screwed up (even worse) 3.13.0-35 eth0 eth1 coldboot y10 y unplug/plug 1 n11 n11 unplug/plug 2 n12 n12 softboot y13 y13 unplug/plug 1 n14 n14 unplug/plug 2 n15 n15 (y10) No TX count on eth0, nic errors (only RX no TX + lost) (n11) no ping on eth0 and eth1, no light on eth1 (plugged eth0 first) (n12) no ping on eth0 and eth1, no light on eth1 (plugged eth1 first) (y13) lost packets on eth0, no TX count on eth1 (n14) no ping on eth0 and eth1, no light on eth0 (plugged eth0 first) (n15) no ping on eth0 and eth1, no light on eth0 (plugged eth1 first) hope the output format ist posted with fixed spacing ...