| procedure forwarding (packet-in,comb,flag,re-table) |
| sMAC≔comb.sMAC |
| sIPv6≔comb.sIPv6 |
| dMAC≔comb.dMAC |
| dIPv6≔comb.dIPv6 |
| DPID≔comb.DPID |
| port≔comb.port |
| if () authentication failed} |
| send packet-out with drop action |
| else if () |
| path≔collector_find_path ([sMAC,sIPv6,dMAC,dIPv6]) |
| add ([sMAC,sIPv6],([dMAC,dIPv6],path)) to re-table |
| determine action based on path |
| send packet-out with the action |
| else if () |
| if ([dMAC,dIPv6] exists in re-table.([sMAC,sIPv6]) |
| && [DPID,port] exists in path) |
| determine action based on stored path |
| else |
| path≔collector_find_path ([sMAC,sIPv6,dMAC,dIPv6]) |
| add ([dMAC,dIPv6],path) to re-table.([sMAC,sIPv6]) |
| determine action based on path |
| send packet-out with the action |
| else |
| error value of flag |
