[  481.459220] netdevsim netdevsim300 eni300np1: renamed from eth0
[  481.561175] netdevsim netdevsim672 eni672np1: renamed from eth1
[  481.911110] Could not find device with ifindex 2000 in netnsfd 11
[  481.911255] Could not find netns with fd: 2000
[  481.911326] Cannot link a netdevsim to itself
[  481.911413] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).