[ 1234.321016][T11136] netdevsim netdevsim291 eni291np1: renamed from eth0
[ 1234.371492][T11138] netdevsim netdevsim521 eni521np1: renamed from eth1
[ 1237.710739][T11128] Could not find device with ifindex 2000 in netnsfd 11
[ 1237.711468][T11128] Could not find netns with fd: 2000
[ 1237.712070][T11128] Cannot link a netdevsim to itself
[ 1237.713150][T11128] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).