[  522.800114] netdevsim netdevsim518 eni518np1: renamed from eth1
[  522.896857] netdevsim netdevsim291 eni291np1: renamed from eth0
[  523.125588] Could not find device with ifindex 2000 in netnsfd 11
[  523.125868] Could not find netns with fd: 2000
[  523.126005] Cannot link a netdevsim to itself
[  523.126163] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).