UnreachableNode¶

//
// Helper struct to represent (L3Address, sequence number) pairs in a RERR message
//
struct UnreachableNode
{
    @packetData;
    L3Address addr;    // The IP address of the destination that has become unreachable due to a link break.
    uint32_t seqNum;    // The sequence number in the route table entry for the destination listed in the previous Unreachable Destination IP Address field.
};