IP_MAXPACKET
fBytesLeft(IP_MAXPACKET)
fBytesLeft -= IP_MAXPACKET - end;
fBytesLeft -= IP_MAXPACKET - end;
fBytesLeft -= IP_MAXPACKET - end;
static u_char outpackhdr[IP_MAXPACKET], *outpack;
u_char *datap, packet[IP_MAXPACKET] __aligned(4);
maxpayload = IP_MAXPACKET - icmp_len;
hold = IP_MAXPACKET + 128;
iov.iov_len = IP_MAXPACKET;
IP_MAXPACKET));