[  521.305348] netdevsim netdevsim724 eni724np1: renamed from eth1
[  521.403501] netdevsim netdevsim510 eni510np1: renamed from eth0
[  521.641022] Could not find device with ifindex 2000 in netnsfd 11
[  521.641203] Could not find netns with fd: 2000
[  521.641295] Cannot link a netdevsim to itself
[  521.641392] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).