Interface doesn't accept private ioctl...

: mode (8BE2): Connection timed out

sysctl: error: 'net.ipv4.tcp_syncookies' is an unknown key

sysctl: error: 'net.ipv4.ip_conntrack_tcp_timeouts' is an unknown key

sysctl: error: 'net.ipv4.ip_conntrack_udp_timeouts' is an unknown key