[  460.162615] netdevsim netdevsim453 eni453np1: renamed from eth0
[  460.162964] netdevsim netdevsim646 eni646np1: renamed from eth1
[  460.256345] Could not find device with ifindex 2000 in netnsfd 11
[  460.256511] Could not find netns with fd: 2000
[  460.256620] Cannot link a netdevsim to itself
[  460.256742] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).