SYS_sendto
case SYS_sendto:
(code) == SYS_send || (code) == SYS_sendto)
(code) == SYS_pwrite64 || (code) == SYS_send || (code) == SYS_sendto)
case SYS_sendto:
praddset(&traceeven, SYS_sendto);
(code) == SYS_pwrite64 || (code) == SYS_send || (code) == SYS_sendto)