[  455.738194] netdevsim netdevsim283 eni283np1: renamed from eth0
[  455.738620] netdevsim netdevsim521 eni521np1: renamed from eth1
[  455.832673] Could not find device with ifindex 2000 in netnsfd 11
[  455.832827] Could not find netns with fd: 2000
[  455.832944] Cannot link a netdevsim to itself
[  455.833083] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).