[  519.710156] netdevsim netdevsim399 eni399np1: renamed from eth0
[  519.807318] netdevsim netdevsim694 eni694np1: renamed from eth1
[  520.066162] Could not find device with ifindex 2000 in netnsfd 11
[  520.066357] Could not find netns with fd: 2000
[  520.066478] Cannot link a netdevsim to itself
[  520.066577] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).