[  511.108016] netdevsim netdevsim654 eni654np1: renamed from eth1
[  511.204634] netdevsim netdevsim504 eni504np1: renamed from eth0
[  511.414794] Could not find device with ifindex 2000 in netnsfd 11
[  511.414965] Could not find netns with fd: 2000
[  511.415047] Cannot link a netdevsim to itself
[  511.415140] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).