[  521.402762] netdevsim netdevsim485 eni485np1: renamed from eth0
[  521.499312] netdevsim netdevsim520 eni520np1: renamed from eth1
[  521.724451] Could not find device with ifindex 2000 in netnsfd 11
[  521.724632] Could not find netns with fd: 2000
[  521.724734] Cannot link a netdevsim to itself
[  521.724821] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).