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--- a/configure.ac
+++ b/configure.ac
@@ -152,6 +152,10 @@ if test "x$found_resolv" != "xyes"; then
AC_MSG_ERROR([Unable to do DNS lookups (libresolv check failed)])
fi
LIBS="${LIBS} ${RESOLV_LIBS}"
+AC_SEARCH_LIBS([res_mkquery], [], [AC_DEFINE([HAVE_RES_MKQUERY], 1, [Define if res_mkquery exists])])
+AC_SEARCH_LIBS([__res_mkquery], [], [AC_DEFINE([HAVE_RES_MKQUERY], 1, [Define if res_mkquery exists])])
+AC_SEARCH_LIBS([res_send], [], [AC_DEFINE([HAVE_RES_SEND], 1, [Define if res_send exists])])
+AC_SEARCH_LIBS([__res_send], [], [AC_DEFINE([HAVE_RES_SEND], 1, [Define if res_send exists])])
dnl *****************************************************************
dnl * *
--- a/src/libs/zbxsysinfo/common/net.c
+++ b/src/libs/zbxsysinfo/common/net.c
@@ -424,6 +424,7 @@ static int dns_query(AGENT_REQUEST *requ
if (-1 == res_init()) /* initialize always, settings might have changed */
return SYSINFO_RET_FAIL;
+#if defined(HAVE_RES_MKQUERY) && defined(HAVE_RES_SEND)
if (-1 == (res = res_mkquery(QUERY, zone, C_IN, type, NULL, 0, NULL, buf, sizeof(buf))))
return SYSINFO_RET_FAIL;
@@ -448,6 +449,11 @@ static int dns_query(AGENT_REQUEST *requ
_res.retry = retry;
res = res_send(buf, res, answer.buffer, sizeof(answer.buffer));
+#else /* defined(HAVE_RES_QUERY) && defined(HAVE_RES_SEND) */
+ /* retrand and retry are ignored */
+ if (-1 == (res = res_query(zone, C_IN, type, answer.buffer, sizeof(answer.buffer))))
+ return SYSINFO_RET_FAIL;
+#endif
_res.retrans = saved_retrans;
_res.retry = saved_retry;
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