[  486.809420] netdevsim netdevsim638 eni638np1: renamed from eth1
[  486.910648] netdevsim netdevsim298 eni298np1: renamed from eth0
[  487.279086] Could not find device with ifindex 2000 in netnsfd 11
[  487.279235] Could not find netns with fd: 2000
[  487.279318] Cannot link a netdevsim to itself
[  487.279412] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).