[  523.121603] netdevsim netdevsim522 eni522np1: renamed from eth1
[  523.217549] netdevsim netdevsim267 eni267np1: renamed from eth0
[  523.480271] Could not find device with ifindex 2000 in netnsfd 11
[  523.480508] Could not find netns with fd: 2000
[  523.480629] Cannot link a netdevsim to itself
[  523.480767] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).