[ 1021.719089][T12134] netdevsim netdevsim539 eni539np1: renamed from eth1
[ 1021.829996][T12078] netdevsim netdevsim398 eni398np1: renamed from eth0
[ 1023.675687][T12456] Could not find device with ifindex 2000 in netnsfd 11
[ 1023.676710][T12456] Could not find netns with fd: 2000
[ 1023.677536][T12456] Cannot link a netdevsim to itself
[ 1023.678415][T12456] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).