[  521.364951] netdevsim netdevsim434 eni434np1: renamed from eth0
[  521.461648] netdevsim netdevsim722 eni722np1: renamed from eth1
[  521.697684] Could not find device with ifindex 2000 in netnsfd 11
[  521.697845] Could not find netns with fd: 2000
[  521.697917] Cannot link a netdevsim to itself
[  521.698003] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).