@param icmp6_enable_unreachable - 1 = send ICMP unreachable err msgs
@param ip4_nh_address - direct IP4 next-hop address
@param ip6_nh_address - direct IP6 next-hop address
- @param ip4_lifetime_ms - reassembly valid lifetime, or ~0
- @param ip4_pool_size - max number of reassemblies, or ~0
- @param ip4_buffers - max number of reassembly buffers, or ~0
- @param ip4_ht_ratio - reassembly valid lifetime, or ~0
@param ip6_lifetime_ms - max number of reassemblies, or ~0
@param ip6_pool_size - max number of reassemblies, or ~0
@param ip6_buffers - max number of reassembly buffers, or ~0