[  485.375458] netdevsim netdevsim674 eni674np1: renamed from eth1
[  485.471535] netdevsim netdevsim457 eni457np1: renamed from eth0
[  485.708255] Could not find device with ifindex 2000 in netnsfd 11
[  485.708603] Could not find netns with fd: 2000
[  485.708723] Cannot link a netdevsim to itself
[  485.708846] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).