[  527.734367] netdevsim netdevsim473 eni473np1: renamed from eth0
[  527.831273] netdevsim netdevsim637 eni637np1: renamed from eth1
[  528.125845] Could not find device with ifindex 2000 in netnsfd 11
[  528.126191] Could not find netns with fd: 2000
[  528.126324] Cannot link a netdevsim to itself
[  528.126472] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).