[ 1186.676135][T10963] Could not find device with ifindex 2000 in netnsfd 11
[ 1186.676917][T10963] Could not find netns with fd: 2000
[ 1186.677527][T10963] netdevsim netdevsim295 eth0: Cannot link a netdevsim to itself
[ 1186.678720][T10963] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).