[ 1213.661941][T11137] netdevsim netdevsim710 eni710np1: renamed from eth1 [ 1213.691617][T11138] netdevsim netdevsim472 eni472np1: renamed from eth0 [ 1216.971526][T11130] Could not find device with ifindex 2000 in netnsfd 11 [ 1216.972282][T11130] Could not find netns with fd: 2000 [ 1216.972942][T11130] Cannot link a netdevsim to itself [ 1216.973961][T11130] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).