[  485.152816] netdevsim netdevsim520 eni520np1: renamed from eth1
[  485.252650] netdevsim netdevsim285 eni285np1: renamed from eth0
[  485.597275] Could not find device with ifindex 2000 in netnsfd 11
[  485.597435] Could not find netns with fd: 2000
[  485.597521] Cannot link a netdevsim to itself
[  485.597638] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).