Hi, according to ccid-4 internet draft, "the estimated header size on data packets is 36 bytes (20 bytes for the IP header and 16 bytes for the DCCP-data header with 48-bit sequence numbers). The header size would be 32 bytes instead of 36 bytes when 24-bit sequence number were used in the DCCP-data header." In this case, how can I get this information if dccp will use 48-bit or 24-bit sequence number? Leandro. - To unsubscribe from this list: send the line "unsubscribe dccp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html