[  483.449256] netdevsim netdevsim256 eni256np1: renamed from eth0
[  483.550425] netdevsim netdevsim687 eni687np1: renamed from eth1
[  483.843664] Could not find device with ifindex 2000 in netnsfd 11
[  483.843816] Could not find netns with fd: 2000
[  483.843896] Cannot link a netdevsim to itself
[  483.843986] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).