.>1
<1/"next"16t"prev"16t"pr"8t"len"n2X+bxn"src"16t"dst"16t"sport"8t"dport"n2X2xn"seq"16t"ack"16t"fl|off"8t"win"8t"sum"8t"urp"n2Xx2+3x
*<1,*<1$<tcpip
