[  487.456298] netdevsim netdevsim737 eni737np1: renamed from eth1
[  487.553104] netdevsim netdevsim451 eni451np1: renamed from eth0
[  487.764225] Could not find device with ifindex 2000 in netnsfd 11
[  487.764470] Could not find netns with fd: 2000
[  487.764542] Cannot link a netdevsim to itself
[  487.764637] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).