[  521.674060] netdevsim netdevsim766 eni766np1: renamed from eth1
[  521.770355] netdevsim netdevsim507 eni507np1: renamed from eth0
[  521.992245] Could not find device with ifindex 2000 in netnsfd 11
[  521.992411] Could not find netns with fd: 2000
[  521.992497] Cannot link a netdevsim to itself
[  521.992595] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).