1#unconditional
2NET_IPV6_ROUTE_FLUSH
3NET_IPV6_ROUTE_GC_THRESH
4NET_IPV6_ROUTE_MAX_SIZE
5NET_IPV6_ROUTE_GC_MIN_INTERVAL
6NET_IPV6_ROUTE_GC_TIMEOUT
7NET_IPV6_ROUTE_GC_INTERVAL
8NET_IPV6_ROUTE_GC_ELASTICITY
9NET_IPV6_ROUTE_MTU_EXPIRES
10NET_IPV6_ROUTE_MIN_ADVMSS
11#conditional
12NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS
13