[  473.788891] netdevsim netdevsim467 eni467np1: renamed from eth0
[  473.789959] netdevsim netdevsim669 eni669np1: renamed from eth1
[  473.875544] Could not find device with ifindex 2000 in netnsfd 11
[  473.875729] Could not find netns with fd: 2000
[  473.875817] Cannot link a netdevsim to itself
[  473.875905] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).