When an IP packet is arriving, who captures it first, native IP stack or Openswan? I guess it is Openswan, isn't it?<br><br>If
the IP packet is encapsulated by an Ethernet frame with a multicast MAC
address but its IP destination address is not the local one, what will Openswan will do? I know native IP stack will discard the packet. Can
I capture the packet before Openswan or IP stack (kernel) does? If I
can, how can I feed the packet to Openswan compulsively? Can I use
Netlink sockets?<br>
<br>Thanks