[  478.036971] netdevsim netdevsim727 eni727np1: renamed from eth1
[  478.037635] netdevsim netdevsim261 eni261np1: renamed from eth0
[  478.126720] Could not find device with ifindex 2000 in netnsfd 11
[  478.126816] Could not find netns with fd: 2000
[  478.126868] Cannot link a netdevsim to itself
[  478.126928] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).