[  520.032037] netdevsim netdevsim391 eni391np1: renamed from eth0
[  520.127964] netdevsim netdevsim544 eni544np1: renamed from eth1
[  520.394951] Could not find device with ifindex 2000 in netnsfd 11
[  520.395186] Could not find netns with fd: 2000
[  520.395291] Cannot link a netdevsim to itself
[  520.395426] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).