[ 481.336090] netdevsim netdevsim283 eni283np1: renamed from eth0 [ 481.338020] netdevsim netdevsim539 eni539np1: renamed from eth1 [ 481.673775] Could not find device with ifindex 2000 in netnsfd 11 [ 481.673916] Could not find netns with fd: 2000 [ 481.673997] Cannot link a netdevsim to itself [ 481.674088] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).