[  484.905421] netdevsim netdevsim401 eni401np1: renamed from eth0
[  485.006740] netdevsim netdevsim637 eni637np1: renamed from eth1
[  485.384869] Could not find device with ifindex 2000 in netnsfd 11
[  485.385046] Could not find netns with fd: 2000
[  485.385140] Cannot link a netdevsim to itself
[  485.385266] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).