[  488.796543] netdevsim netdevsim622 eni622np1: renamed from eth1
[  488.796716] netdevsim netdevsim394 eni394np1: renamed from eth0
[  488.901866] Could not find device with ifindex 2000 in netnsfd 11
[  488.901971] Could not find netns with fd: 2000
[  488.902023] Cannot link a netdevsim to itself
[  488.902089] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).