[  521.575505] netdevsim netdevsim677 eni677np1: renamed from eth1
[  521.673405] netdevsim netdevsim297 eni297np1: renamed from eth0
[  521.910892] Could not find device with ifindex 2000 in netnsfd 11
[  521.911100] Could not find netns with fd: 2000
[  521.911205] Cannot link a netdevsim to itself
[  521.911332] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).