[ 485.019043] netdevsim netdevsim281 eni281np1: renamed from eth0 [ 485.120545] netdevsim netdevsim587 eni587np1: renamed from eth1 [ 485.445602] Could not find device with ifindex 2000 in netnsfd 11 [ 485.445742] Could not find netns with fd: 2000 [ 485.445804] Cannot link a netdevsim to itself [ 485.445892] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).