[  523.741396] netdevsim netdevsim399 eni399np1: renamed from eth0
[  523.838985] netdevsim netdevsim583 eni583np1: renamed from eth1
[  524.101470] Could not find device with ifindex 2000 in netnsfd 11
[  524.101632] Could not find netns with fd: 2000
[  524.101742] Cannot link a netdevsim to itself
[  524.101834] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).