[  487.765221] netdevsim netdevsim663 eni663np1: renamed from eth1
[  487.861312] netdevsim netdevsim498 eni498np1: renamed from eth0
[  488.076134] Could not find device with ifindex 2000 in netnsfd 11
[  488.076447] Could not find netns with fd: 2000
[  488.076563] Cannot link a netdevsim to itself
[  488.076697] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).