[  482.269132] netdevsim netdevsim450 eni450np1: renamed from eth0
[  482.371244] netdevsim netdevsim641 eni641np1: renamed from eth1
[  482.746044] Could not find device with ifindex 2000 in netnsfd 11
[  482.746218] Could not find netns with fd: 2000
[  482.746308] Cannot link a netdevsim to itself
[  482.746407] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).