[ 521.615169] netdevsim netdevsim565 eni565np1: renamed from eth1 [ 521.712172] netdevsim netdevsim281 eni281np1: renamed from eth0 [ 521.949432] Could not find device with ifindex 2000 in netnsfd 11 [ 521.949599] Could not find netns with fd: 2000 [ 521.949681] Cannot link a netdevsim to itself [ 521.949772] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).