[  456.081697] netdevsim netdevsim597 eni597np1: renamed from eth1
[  456.081970] netdevsim netdevsim463 eni463np1: renamed from eth0
[  456.174330] Could not find device with ifindex 2000 in netnsfd 11
[  456.174445] Could not find netns with fd: 2000
[  456.174514] Cannot link a netdevsim to itself
[  456.174578] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).