[  493.830805] netdevsim netdevsim755 eni755np1: renamed from eth1
[  493.926387] netdevsim netdevsim438 eni438np1: renamed from eth0
[  494.185721] Could not find device with ifindex 2000 in netnsfd 11
[  494.186101] Could not find netns with fd: 2000
[  494.186192] Cannot link a netdevsim to itself
[  494.186304] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).