[  765.465693][T14611] netdevsim netdevsim421 eni421np1: renamed from eth0
[  765.476419][T14613] netdevsim netdevsim631 eni631np1: renamed from eth1
[  766.044276][T14599] Could not find device with ifindex 2000 in netnsfd 11
[  766.044950][T14599] Could not find netns with fd: 2000
[  766.045428][T14599] Cannot link a netdevsim to itself
[  766.046010][T14599] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).