[  514.111746] netdevsim netdevsim535 eni535np1: renamed from eth1
[  514.210305] netdevsim netdevsim437 eni437np1: renamed from eth0
[  514.385300] Could not find device with ifindex 2000 in netnsfd 11
[  514.385489] Could not find netns with fd: 2000
[  514.385585] Cannot link a netdevsim to itself
[  514.385695] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).