[  507.870153] netdevsim netdevsim619 eni619np1: renamed from eth1
[  507.967586] netdevsim netdevsim428 eni428np1: renamed from eth0
[  508.214609] Could not find device with ifindex 2000 in netnsfd 11
[  508.214777] Could not find netns with fd: 2000
[  508.214856] Cannot link a netdevsim to itself
[  508.214972] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).