[  516.142094] netdevsim netdevsim552 eni552np1: renamed from eth1
[  516.239051] netdevsim netdevsim425 eni425np1: renamed from eth0
[  516.433556] Could not find device with ifindex 2000 in netnsfd 11
[  516.433713] Could not find netns with fd: 2000
[  516.433800] Cannot link a netdevsim to itself
[  516.433902] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).