[  474.973907] netdevsim netdevsim257 eni257np1: renamed from eth0
[  474.974069] netdevsim netdevsim522 eni522np1: renamed from eth1
[  475.075959] Could not find device with ifindex 2000 in netnsfd 11
[  475.076042] Could not find netns with fd: 2000
[  475.076085] Cannot link a netdevsim to itself
[  475.076135] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).