[  473.509398] netdevsim netdevsim348 eni348np1: renamed from eth0
[  473.512768] netdevsim netdevsim604 eni604np1: renamed from eth1
[  473.590120] Could not find device with ifindex 2000 in netnsfd 11
[  473.590252] Could not find netns with fd: 2000
[  473.590356] Cannot link a netdevsim to itself
[  473.590464] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).