[  490.571794] netdevsim netdevsim638 eni638np1: renamed from eth1
[  490.668000] netdevsim netdevsim459 eni459np1: renamed from eth0
[  490.903969] Could not find device with ifindex 2000 in netnsfd 11
[  490.904271] Could not find netns with fd: 2000
[  490.904378] Cannot link a netdevsim to itself
[  490.904487] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).