[  483.469883] netdevsim netdevsim315 eni315np1: renamed from eth0
[  483.470522] netdevsim netdevsim620 eni620np1: renamed from eth1
[  483.562128] Could not find device with ifindex 2000 in netnsfd 11
[  483.562217] Could not find netns with fd: 2000
[  483.562266] Cannot link a netdevsim to itself
[  483.562318] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).