[  456.864113] netdevsim netdevsim276 eni276np1: renamed from eth0
[  456.864998] netdevsim netdevsim555 eni555np1: renamed from eth1
[  456.955907] Could not find device with ifindex 2000 in netnsfd 11
[  456.956013] Could not find netns with fd: 2000
[  456.956055] Cannot link a netdevsim to itself
[  456.956106] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).