enum io.IpOptionNumber

enum IpOptionNumber
{
    Eool   = 0,
    Nop    = 1,
    Sec    = 2,
    Lsr    = 3,
    Ts     = 4,
    Esec   = 5,
    Cipso  = 6,
    Rr     = 7,
    Sid    = 8,
    Ssr    = 9,
    Zsu    = 10,
    Mtup   = 11,
    Mtur   = 12,
    Finn   = 13,
    Visa   = 14,
    Encode = 15,
    Imitd  = 16,
    Eip    = 17,
    Tr     = 18,
    Addext = 19,
    Rtralt = 20,
    Sdb    = 21,
    Dps    = 23,
    Ump    = 24,
    Qs     = 25,
};