[  544.101250] netdevsim netdevsim334 eni334np1: renamed from eth0
[  544.202630] netdevsim netdevsim662 eni662np1: renamed from eth1
[  544.572120] Could not find device with ifindex 2000 in netnsfd 11
[  544.572281] Could not find netns with fd: 2000
[  544.572379] Cannot link a netdevsim to itself
[  544.572504] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).