[  488.964489] netdevsim netdevsim374 eni374np1: renamed from eth0
[  488.965157] netdevsim netdevsim621 eni621np1: renamed from eth1
[  489.046260] Could not find device with ifindex 2000 in netnsfd 11
[  489.046369] Could not find netns with fd: 2000
[  489.046415] Cannot link a netdevsim to itself
[  489.046481] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).