[  510.165866] netdevsim netdevsim523 eni523np1: renamed from eth1
[  510.262848] netdevsim netdevsim353 eni353np1: renamed from eth0
[  510.488840] Could not find device with ifindex 2000 in netnsfd 11
[  510.489025] Could not find netns with fd: 2000
[  510.489100] Cannot link a netdevsim to itself
[  510.489195] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).