[  472.770840] netdevsim netdevsim404 eni404np1: renamed from eth0
[  472.771192] netdevsim netdevsim539 eni539np1: renamed from eth1
[  472.847488] Could not find device with ifindex 2000 in netnsfd 11
[  472.847626] Could not find netns with fd: 2000
[  472.847736] Cannot link a netdevsim to itself
[  472.847850] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).