[  515.808657] netdevsim netdevsim723 eni723np1: renamed from eth1
[  515.906326] netdevsim netdevsim325 eni325np1: renamed from eth0
[  516.155459] Could not find device with ifindex 2000 in netnsfd 11
[  516.155683] Could not find netns with fd: 2000
[  516.155794] Cannot link a netdevsim to itself
[  516.155918] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).