[  518.874289] netdevsim netdevsim607 eni607np1: renamed from eth1
[  518.972643] netdevsim netdevsim503 eni503np1: renamed from eth0
[  519.223841] Could not find device with ifindex 2000 in netnsfd 11
[  519.224076] Could not find netns with fd: 2000
[  519.224174] Cannot link a netdevsim to itself
[  519.224307] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).