[  528.757205] netdevsim netdevsim748 eni748np1: renamed from eth1
[  528.855288] netdevsim netdevsim440 eni440np1: renamed from eth0
[  529.047957] Could not find device with ifindex 2000 in netnsfd 11
[  529.048188] Could not find netns with fd: 2000
[  529.048303] Cannot link a netdevsim to itself
[  529.048431] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).