[  482.944709] netdevsim netdevsim257 eni257np1: renamed from eth0
[  482.945595] netdevsim netdevsim527 eni527np1: renamed from eth1
[  483.025697] Could not find device with ifindex 2000 in netnsfd 11
[  483.025776] Could not find netns with fd: 2000
[  483.025821] Cannot link a netdevsim to itself
[  483.025870] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).