[  473.251377] netdevsim netdevsim629 eni629np1: renamed from eth1
[  473.252158] netdevsim netdevsim451 eni451np1: renamed from eth0
[  473.335220] Could not find device with ifindex 2000 in netnsfd 11
[  473.335355] Could not find netns with fd: 2000
[  473.335468] Cannot link a netdevsim to itself
[  473.335584] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).