[  508.561236] netdevsim netdevsim634 eni634np1: renamed from eth1
[  508.659416] netdevsim netdevsim466 eni466np1: renamed from eth0
[  508.852369] Could not find device with ifindex 2000 in netnsfd 11
[  508.852595] Could not find netns with fd: 2000
[  508.852700] Cannot link a netdevsim to itself
[  508.852815] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).