[  494.470728] netdevsim netdevsim433 eni433np1: renamed from eth0
[  494.566446] netdevsim netdevsim621 eni621np1: renamed from eth1
[  494.804754] Could not find device with ifindex 2000 in netnsfd 11
[  494.805080] Could not find netns with fd: 2000
[  494.805151] Cannot link a netdevsim to itself
[  494.805236] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).