auto import from //depot/cupcake/@135843
diff --git a/libc/private/arpa_nameser_compat.h b/libc/private/arpa_nameser_compat.h
new file mode 100644
index 0000000..79bdfd0
--- /dev/null
+++ b/libc/private/arpa_nameser_compat.h
@@ -0,0 +1,236 @@
+/* $NetBSD: nameser_compat.h,v 1.1.1.2 2004/11/07 01:28:27 christos Exp $ */
+
+/* Copyright (c) 1983, 1989
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * from nameser.h 8.1 (Berkeley) 6/2/93
+ * Id: nameser_compat.h,v 1.1.2.3.4.2 2004/07/01 04:43:41 marka Exp
+ */
+
+#ifndef _ARPA_NAMESER_COMPAT_
+#define _ARPA_NAMESER_COMPAT_
+
+#define __BIND 19950621 /* (DEAD) interface version stamp. */
+
+#include <endian.h>
+
+#ifndef BYTE_ORDER
+#if (BSD >= 199103)
+# include <machine/endian.h>
+#else
+#ifdef __linux
+# include <endian.h>
+#else
+#define LITTLE_ENDIAN 1234 /* least-significant byte first (vax, pc) */
+#define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
+#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp)*/
+
+#if defined(vax) || defined(ns32000) || defined(sun386) || defined(i386) || \
+ defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
+ defined(__alpha__) || defined(__alpha) || \
+ (defined(__Lynx__) && defined(__x86__))
+#define BYTE_ORDER LITTLE_ENDIAN
+#endif
+
+#if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \
+ defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \
+ defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\
+ defined(apollo) || defined(__convex__) || defined(_CRAY) || \
+ defined(__hppa) || defined(__hp9000) || \
+ defined(__hp9000s300) || defined(__hp9000s700) || \
+ defined(__hp3000s900) || defined(__hpux) || defined(MPE) || \
+ defined (BIT_ZERO_ON_LEFT) || defined(m68k) || defined(__sparc) || \
+ (defined(__Lynx__) && \
+ (defined(__68k__) || defined(__sparc__) || defined(__powerpc__)))
+#define BYTE_ORDER BIG_ENDIAN
+#endif
+#endif /* __linux */
+#endif /* BSD */
+#endif /* BYTE_ORDER */
+
+#if !defined(BYTE_ORDER) || \
+ (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN && \
+ BYTE_ORDER != PDP_ENDIAN)
+ /* you must determine what the correct bit order is for
+ * your compiler - the next line is an intentional error
+ * which will force your compiles to bomb until you fix
+ * the above macros.
+ */
+ #error "Undefined or invalid BYTE_ORDER";
+#endif
+
+/*
+ * Structure for query header. The order of the fields is machine- and
+ * compiler-dependent, depending on the byte/bit order and the layout
+ * of bit fields. We use bit fields only in int variables, as this
+ * is all ANSI requires. This requires a somewhat confusing rearrangement.
+ */
+
+typedef struct {
+ unsigned id :16; /* query identification number */
+#if BYTE_ORDER == BIG_ENDIAN
+ /* fields in third byte */
+ unsigned qr: 1; /* response flag */
+ unsigned opcode: 4; /* purpose of message */
+ unsigned aa: 1; /* authoritive answer */
+ unsigned tc: 1; /* truncated message */
+ unsigned rd: 1; /* recursion desired */
+ /* fields in fourth byte */
+ unsigned ra: 1; /* recursion available */
+ unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */
+ unsigned ad: 1; /* authentic data from named */
+ unsigned cd: 1; /* checking disabled by resolver */
+ unsigned rcode :4; /* response code */
+#endif
+#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
+ /* fields in third byte */
+ unsigned rd :1; /* recursion desired */
+ unsigned tc :1; /* truncated message */
+ unsigned aa :1; /* authoritive answer */
+ unsigned opcode :4; /* purpose of message */
+ unsigned qr :1; /* response flag */
+ /* fields in fourth byte */
+ unsigned rcode :4; /* response code */
+ unsigned cd: 1; /* checking disabled by resolver */
+ unsigned ad: 1; /* authentic data from named */
+ unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */
+ unsigned ra :1; /* recursion available */
+#endif
+ /* remaining bytes */
+ unsigned qdcount :16; /* number of question entries */
+ unsigned ancount :16; /* number of answer entries */
+ unsigned nscount :16; /* number of authority entries */
+ unsigned arcount :16; /* number of resource entries */
+} HEADER;
+
+#define PACKETSZ NS_PACKETSZ
+#define MAXDNAME NS_MAXDNAME
+#define MAXCDNAME NS_MAXCDNAME
+#define MAXLABEL NS_MAXLABEL
+#define HFIXEDSZ NS_HFIXEDSZ
+#define QFIXEDSZ NS_QFIXEDSZ
+#define RRFIXEDSZ NS_RRFIXEDSZ
+#define INT32SZ NS_INT32SZ
+#define INT16SZ NS_INT16SZ
+#define INT8SZ NS_INT8SZ
+#define INADDRSZ NS_INADDRSZ
+#define IN6ADDRSZ NS_IN6ADDRSZ
+#define INDIR_MASK NS_CMPRSFLGS
+#define NAMESERVER_PORT NS_DEFAULTPORT
+
+#define S_ZONE ns_s_zn
+#define S_PREREQ ns_s_pr
+#define S_UPDATE ns_s_ud
+#define S_ADDT ns_s_ar
+
+#define QUERY ns_o_query
+#define IQUERY ns_o_iquery
+#define STATUS ns_o_status
+#define NS_NOTIFY_OP ns_o_notify
+#define NS_UPDATE_OP ns_o_update
+
+#define NOERROR ns_r_noerror
+#define FORMERR ns_r_formerr
+#define SERVFAIL ns_r_servfail
+#define NXDOMAIN ns_r_nxdomain
+#define NOTIMP ns_r_notimpl
+#define REFUSED ns_r_refused
+#define YXDOMAIN ns_r_yxdomain
+#define YXRRSET ns_r_yxrrset
+#define NXRRSET ns_r_nxrrset
+#define NOTAUTH ns_r_notauth
+#define NOTZONE ns_r_notzone
+/*#define BADSIG ns_r_badsig*/
+/*#define BADKEY ns_r_badkey*/
+/*#define BADTIME ns_r_badtime*/
+
+
+#define DELETE ns_uop_delete
+#define ADD ns_uop_add
+
+#define T_A ns_t_a
+#define T_NS ns_t_ns
+#define T_MD ns_t_md
+#define T_MF ns_t_mf
+#define T_CNAME ns_t_cname
+#define T_SOA ns_t_soa
+#define T_MB ns_t_mb
+#define T_MG ns_t_mg
+#define T_MR ns_t_mr
+#define T_NULL ns_t_null
+#define T_WKS ns_t_wks
+#define T_PTR ns_t_ptr
+#define T_HINFO ns_t_hinfo
+#define T_MINFO ns_t_minfo
+#define T_MX ns_t_mx
+#define T_TXT ns_t_txt
+#define T_RP ns_t_rp
+#define T_AFSDB ns_t_afsdb
+#define T_X25 ns_t_x25
+#define T_ISDN ns_t_isdn
+#define T_RT ns_t_rt
+#define T_NSAP ns_t_nsap
+#define T_NSAP_PTR ns_t_nsap_ptr
+#define T_SIG ns_t_sig
+#define T_KEY ns_t_key
+#define T_PX ns_t_px
+#define T_GPOS ns_t_gpos
+#define T_AAAA ns_t_aaaa
+#define T_LOC ns_t_loc
+#define T_NXT ns_t_nxt
+#define T_EID ns_t_eid
+#define T_NIMLOC ns_t_nimloc
+#define T_SRV ns_t_srv
+#define T_ATMA ns_t_atma
+#define T_NAPTR ns_t_naptr
+#define T_A6 ns_t_a6
+#define T_TSIG ns_t_tsig
+#define T_IXFR ns_t_ixfr
+#define T_AXFR ns_t_axfr
+#define T_MAILB ns_t_mailb
+#define T_MAILA ns_t_maila
+#define T_ANY ns_t_any
+
+#define C_IN ns_c_in
+#define C_CHAOS ns_c_chaos
+#define C_HS ns_c_hs
+/* BIND_UPDATE */
+#define C_NONE ns_c_none
+#define C_ANY ns_c_any
+
+#define GETSHORT NS_GET16
+#define GETLONG NS_GET32
+#define PUTSHORT NS_PUT16
+#define PUTLONG NS_PUT32
+
+#endif /* _ARPA_NAMESER_COMPAT_ */