[  473.799539] netdevsim netdevsim409 eni409np1: renamed from eth0
[  473.800066] netdevsim netdevsim631 eni631np1: renamed from eth1
[  473.875928] Could not find device with ifindex 2000 in netnsfd 11
[  473.876005] Could not find netns with fd: 2000
[  473.876052] Cannot link a netdevsim to itself
[  473.876103] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).