[  489.093873] netdevsim netdevsim478 eni478np1: renamed from eth0
[  489.191601] netdevsim netdevsim749 eni749np1: renamed from eth1
[  489.415735] Could not find device with ifindex 2000 in netnsfd 11
[  489.416137] Could not find netns with fd: 2000
[  489.416237] Cannot link a netdevsim to itself
[  489.416336] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).