Merge branch '385-add-a-built-in-ipv4only-arpa-default-zone' into 'main'

Resolve "Add a built-in ipv4only.arpa default zone."

Closes #385

See merge request isc-projects/bind9!479
This commit is contained in:
Mark Andrews 2020-12-11 06:04:47 +00:00
commit 3e4f5319ef
13 changed files with 344 additions and 45 deletions

View file

@ -1,3 +1,5 @@
5549. [protocol] Serve ipv4only.arpa when dns64 is configured. [GL #385]
5548. [placeholder]
5547. [placeholder]

View file

@ -32,18 +32,22 @@
typedef struct builtin builtin_t;
static isc_result_t
do_version_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_hostname_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_authors_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_id_lookup(dns_sdblookup_t *lookup);
do_dns64_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_empty_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_dns64_lookup(dns_sdblookup_t *lookup);
do_hostname_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_id_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_ipv4only_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_ipv4reverse_lookup(dns_sdblookup_t *lookup);
static isc_result_t
do_version_lookup(dns_sdblookup_t *lookup);
/*
* We can't use function pointers as the db_data directly
@ -57,12 +61,14 @@ struct builtin {
char *contact;
};
static builtin_t version_builtin = { do_version_lookup, NULL, NULL };
static builtin_t hostname_builtin = { do_hostname_lookup, NULL, NULL };
static builtin_t authors_builtin = { do_authors_lookup, NULL, NULL };
static builtin_t id_builtin = { do_id_lookup, NULL, NULL };
static builtin_t empty_builtin = { do_empty_lookup, NULL, NULL };
static builtin_t dns64_builtin = { do_dns64_lookup, NULL, NULL };
static builtin_t empty_builtin = { do_empty_lookup, NULL, NULL };
static builtin_t hostname_builtin = { do_hostname_lookup, NULL, NULL };
static builtin_t id_builtin = { do_id_lookup, NULL, NULL };
static builtin_t ipv4only_builtin = { do_ipv4only_lookup, NULL, NULL };
static builtin_t ipv4reverse_builtin = { do_ipv4reverse_lookup, NULL, NULL };
static builtin_t version_builtin = { do_version_lookup, NULL, NULL };
static dns_sdbimplementation_t *builtin_impl;
static dns_sdbimplementation_t *dns64_impl;
@ -89,7 +95,8 @@ static const unsigned char hex16[256] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 /*F0*/
};
const unsigned char decimal[] = "0123456789";
static const unsigned char decimal[] = "0123456789";
static const unsigned char ipv4only[] = "\010ipv4only\004arpa";
static size_t
dns64_rdata(unsigned char *v, size_t start, unsigned char *rdata) {
@ -289,6 +296,16 @@ dns64_cname(const dns_name_t *zone, const dns_name_t *name,
*/
return (ISC_R_NOTFOUND);
}
/*
* Reverse of 192.0.0.170 or 192.0.0.171 maps to ipv4only.arpa.
*/
if ((v[0] == 170 || v[0] == 171) && v[1] == 0 && v[2] == 0 &&
v[3] == 192) {
return (dns_sdb_putrdata(lookup, dns_rdatatype_ptr, 3600,
ipv4only, sizeof(ipv4only)));
}
return (dns_sdb_putrdata(lookup, dns_rdatatype_cname, 600, rdata,
(unsigned int)len));
}
@ -429,6 +446,30 @@ do_empty_lookup(dns_sdblookup_t *lookup) {
return (ISC_R_SUCCESS);
}
static isc_result_t
do_ipv4only_lookup(dns_sdblookup_t *lookup) {
isc_result_t result;
unsigned char data[2][4] = { { 192, 0, 0, 170 }, { 192, 0, 0, 171 } };
for (int i = 0; i < 2; i++) {
result = dns_sdb_putrdata(lookup, dns_rdatatype_a, 3600,
data[i], 4);
if (result != ISC_R_SUCCESS) {
return (result);
}
}
return (ISC_R_SUCCESS);
}
static isc_result_t
do_ipv4reverse_lookup(dns_sdblookup_t *lookup) {
isc_result_t result;
result = dns_sdb_putrdata(lookup, dns_rdatatype_ptr, 3600, ipv4only,
sizeof(ipv4only));
return (result);
}
static isc_result_t
builtin_authority(const char *zone, void *dbdata, dns_sdblookup_t *lookup) {
isc_result_t result;
@ -472,7 +513,10 @@ builtin_create(const char *zone, int argc, char **argv, void *driverdata,
UNUSED(zone);
UNUSED(driverdata);
if (strcmp(argv[0], "empty") == 0 || strcmp(argv[0], "dns64") == 0) {
if (strcmp(argv[0], "dns64") == 0 || strcmp(argv[0], "empty") == 0 ||
strcmp(argv[0], "ipv4only") == 0 ||
strcmp(argv[0], "ipv4reverse") == 0)
{
if (argc != 3) {
return (DNS_R_SYNTAX);
}
@ -480,19 +524,27 @@ builtin_create(const char *zone, int argc, char **argv, void *driverdata,
return (DNS_R_SYNTAX);
}
if (strcmp(argv[0], "version") == 0) {
*dbdata = &version_builtin;
if (strcmp(argv[0], "authors") == 0) {
*dbdata = &authors_builtin;
} else if (strcmp(argv[0], "hostname") == 0) {
*dbdata = &hostname_builtin;
} else if (strcmp(argv[0], "authors") == 0) {
*dbdata = &authors_builtin;
} else if (strcmp(argv[0], "id") == 0) {
*dbdata = &id_builtin;
} else if (strcmp(argv[0], "empty") == 0 ||
strcmp(argv[0], "dns64") == 0) {
} else if (strcmp(argv[0], "version") == 0) {
*dbdata = &version_builtin;
} else if (strcmp(argv[0], "dns64") == 0 ||
strcmp(argv[0], "empty") == 0 ||
strcmp(argv[0], "ipv4only") == 0 ||
strcmp(argv[0], "ipv4reverse") == 0)
{
builtin_t *empty;
char *server;
char *contact;
if (argc != 3) {
return (DNS_R_SYNTAX);
}
/*
* We don't want built-in zones to fail. Fallback to
* the static configuration if memory allocation fails.
@ -501,10 +553,14 @@ builtin_create(const char *zone, int argc, char **argv, void *driverdata,
server = isc_mem_strdup(named_g_mctx, argv[1]);
contact = isc_mem_strdup(named_g_mctx, argv[2]);
if (empty == NULL || server == NULL || contact == NULL) {
if (strcmp(argv[0], "empty") == 0) {
*dbdata = &empty_builtin;
} else {
if (strcmp(argv[0], "dns64") == 0) {
*dbdata = &dns64_builtin;
} else if (strcmp(argv[0], "empty") == 0) {
*dbdata = &empty_builtin;
} else if (strcmp(argv[0], "ipv4only") == 0) {
*dbdata = &ipv4only_builtin;
} else {
*dbdata = &ipv4reverse_builtin;
}
if (server != NULL) {
isc_mem_free(named_g_mctx, server);
@ -517,11 +573,17 @@ builtin_create(const char *zone, int argc, char **argv, void *driverdata,
sizeof(*empty));
}
} else {
if (strcmp(argv[0], "empty") == 0) {
if (strcmp(argv[0], "dns64") == 0) {
memmove(empty, &dns64_builtin,
sizeof(empty_builtin));
} else if (strcmp(argv[0], "empty") == 0) {
memmove(empty, &empty_builtin,
sizeof(empty_builtin));
} else if (strcmp(argv[0], "ipv4only") == 0) {
memmove(empty, &ipv4only_builtin,
sizeof(empty_builtin));
} else {
memmove(empty, &dns64_builtin,
memmove(empty, &ipv4reverse_builtin,
sizeof(empty_builtin));
}
empty->server = server;
@ -544,9 +606,10 @@ builtin_destroy(const char *zone, void *driverdata, void **dbdata) {
/*
* Don't free the static versions.
*/
if (*dbdata == &version_builtin || *dbdata == &hostname_builtin ||
*dbdata == &authors_builtin || *dbdata == &id_builtin ||
*dbdata == &empty_builtin || *dbdata == &dns64_builtin)
if (*dbdata == &authors_builtin || *dbdata == &dns64_builtin ||
*dbdata == &empty_builtin || *dbdata == &hostname_builtin ||
*dbdata == &id_builtin || *dbdata == &ipv4only_builtin ||
*dbdata == &ipv4reverse_builtin || *dbdata == &version_builtin)
{
return;
}

View file

@ -264,6 +264,9 @@ OPTIONS
hostname ( quoted_string | none );
inline-signing boolean;
interface-interval duration;
ipv4only-contact string;
ipv4only-enable boolean;
ipv4only-server string;
ixfr-from-differences ( primary | master | secondary | slave |
boolean );
keep-response-order { address_match_element; ... };
@ -640,6 +643,9 @@ VIEW
| ipv6_address ) [ port integer ] [ dscp integer ]; ... };
glue-cache boolean;// deprecated
inline-signing boolean;
ipv4only-contact string;
ipv4only-enable boolean;
ipv4only-server string;
ixfr-from-differences ( primary | master | secondary | slave |
boolean );
key string {

View file

@ -150,6 +150,10 @@
#define SIZE_AS_PERCENT ((size_t)-2)
#endif /* ifndef SIZE_AS_PERCENT */
#ifndef ARRAYSIZE
#define ARRAYSIZE(x) (sizeof(x) / sizeof(x[0]))
#endif
#ifdef TUNE_LARGE
#define RESOLVER_NTASKS_PERCPU 32
#define UDPBUFFERS 32768
@ -3386,7 +3390,7 @@ cleanup:
}
static isc_result_t
create_empty_zone(dns_zone_t *zone, dns_name_t *name, dns_view_t *view,
create_empty_zone(dns_zone_t *pzone, dns_name_t *name, dns_view_t *view,
const cfg_obj_t *zonelist, const char **empty_dbtype,
int empty_dbtypec, dns_zonestat_level_t statlevel) {
char namebuf[DNS_NAME_FORMATSIZE];
@ -3406,7 +3410,7 @@ create_empty_zone(dns_zone_t *zone, dns_name_t *name, dns_view_t *view,
dns_name_t *contact;
dns_name_t *ns;
dns_name_t *zname;
dns_zone_t *myzone = NULL;
dns_zone_t *zone = NULL;
int rbt_dbtypec = 1;
isc_result_t result;
dns_namereln_t namereln;
@ -3469,7 +3473,7 @@ create_empty_zone(dns_zone_t *zone, dns_name_t *name, dns_view_t *view,
/*
* Is the existing zone the ok to use?
*/
if (zone != NULL) {
if (pzone != NULL) {
unsigned int typec;
const char **dbargv;
@ -3481,29 +3485,29 @@ create_empty_zone(dns_zone_t *zone, dns_name_t *name, dns_view_t *view,
dbargv = empty_dbtype;
}
result = check_dbtype(zone, typec, dbargv, view->mctx);
result = check_dbtype(pzone, typec, dbargv, view->mctx);
if (result != ISC_R_SUCCESS) {
zone = NULL;
pzone = NULL;
}
if (zone != NULL && dns_zone_gettype(zone) != dns_zone_master) {
zone = NULL;
if (pzone != NULL && dns_zone_gettype(pzone) != dns_zone_master)
{
pzone = NULL;
}
if (zone != NULL && dns_zone_getfile(zone) != NULL) {
zone = NULL;
if (pzone != NULL && dns_zone_getfile(pzone) != NULL) {
pzone = NULL;
}
if (zone != NULL) {
dns_zone_getraw(zone, &myzone);
if (myzone != NULL) {
dns_zone_detach(&myzone);
zone = NULL;
if (pzone != NULL) {
dns_zone_getraw(pzone, &zone);
if (zone != NULL) {
dns_zone_detach(&zone);
pzone = NULL;
}
}
}
if (zone == NULL) {
CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, &myzone));
zone = myzone;
if (pzone == NULL) {
CHECK(dns_zonemgr_createzone(named_g_server->zonemgr, &zone));
CHECK(dns_zone_setorigin(zone, name));
CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone));
if (db == NULL) {
@ -3512,6 +3516,8 @@ create_empty_zone(dns_zone_t *zone, dns_name_t *name, dns_view_t *view,
dns_zone_setclass(zone, view->rdclass);
dns_zone_settype(zone, dns_zone_master);
dns_zone_setstats(zone, named_g_server->zonestats);
} else {
dns_zone_attach(pzone, &zone);
}
dns_zone_setoption(zone, ~DNS_ZONEOPT_NOCHECKNS, false);
@ -3555,8 +3561,8 @@ create_empty_zone(dns_zone_t *zone, dns_name_t *name, dns_view_t *view,
"automatic empty zone%s%s: %s", sep, viewname, namebuf);
cleanup:
if (myzone != NULL) {
dns_zone_detach(&myzone);
if (zone != NULL) {
dns_zone_detach(&zone);
}
if (version != NULL) {
dns_db_closeversion(db, &version, false);
@ -3570,6 +3576,84 @@ cleanup:
return (result);
}
static isc_result_t
create_ipv4only_zone(dns_zone_t *pzone, dns_view_t *view,
const dns_name_t *name, const char *type, isc_mem_t *mctx,
const char *server, const char *contact) {
char namebuf[DNS_NAME_FORMATSIZE];
const char *dbtype[4] = { "_builtin", NULL, "@", "." };
const char *sep = ": view ";
const char *viewname = view->name;
dns_zone_t *zone = NULL;
int dbtypec = 4;
isc_result_t result;
REQUIRE(type != NULL);
if (!strcmp(viewname, "_default")) {
sep = "";
viewname = "";
}
dbtype[1] = type;
if (server != NULL) {
dbtype[2] = server;
}
if (contact != NULL) {
dbtype[3] = contact;
}
if (pzone != NULL) {
result = check_dbtype(pzone, dbtypec, dbtype, view->mctx);
if (result != ISC_R_SUCCESS) {
pzone = NULL;
}
}
if (pzone == NULL) {
/*
* Create the actual zone.
*/
CHECK(dns_zone_create(&zone, mctx));
CHECK(dns_zone_setorigin(zone, name));
CHECK(dns_zonemgr_managezone(named_g_server->zonemgr, zone));
dns_zone_setclass(zone, view->rdclass);
dns_zone_settype(zone, dns_zone_master);
dns_zone_setstats(zone, named_g_server->zonestats);
dns_zone_setdbtype(zone, dbtypec, dbtype);
dns_zone_setdialup(zone, dns_dialuptype_no);
dns_zone_setnotifytype(zone, dns_notifytype_no);
dns_zone_setautomatic(zone, true);
dns_zone_setoption(zone, DNS_ZONEOPT_NOCHECKNS, true);
} else {
dns_zone_attach(pzone, &zone);
}
if (view->queryacl != NULL) {
dns_zone_setqueryacl(zone, view->queryacl);
} else {
dns_zone_clearqueryacl(zone);
}
if (view->queryonacl != NULL) {
dns_zone_setqueryonacl(zone, view->queryonacl);
} else {
dns_zone_clearqueryonacl(zone);
}
dns_zone_setview(zone, view);
CHECK(dns_view_addzone(view, zone));
dns_name_format(name, namebuf, sizeof(namebuf));
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"automatic ipv4only zone%s%s: %s", sep, viewname,
namebuf);
cleanup:
if (zone != NULL) {
dns_zone_detach(&zone);
}
return (result);
}
#ifdef HAVE_DNSTAP
static isc_result_t
configure_dnstap(const cfg_obj_t **maps, dns_view_t *view) {
@ -5629,6 +5713,92 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist, cfg_obj_t *config,
}
}
obj = NULL;
if (view->rdclass == dns_rdataclass_in) {
(void)named_config_get(maps, "ipv4only-enable", &obj);
}
if (view->rdclass == dns_rdataclass_in && (obj != NULL)
? cfg_obj_asboolean(obj)
: !ISC_LIST_EMPTY(view->dns64))
{
const char *server, *contact;
dns_fixedname_t fixed;
dns_name_t *name;
struct {
const char *name;
const char *type;
} zones[] = {
{ "ipv4only.arpa", "ipv4only" },
{ "170.0.0.192.in-addr.arpa", "ipv4reverse" },
{ "171.0.0.192.in-addr.arpa", "ipv4reverse" },
};
size_t ipv4only_zone;
obj = NULL;
result = named_config_get(maps, "ipv4only-server", &obj);
if (result == ISC_R_SUCCESS) {
server = cfg_obj_asstring(obj);
} else {
server = NULL;
}
obj = NULL;
result = named_config_get(maps, "ipv4only-contact", &obj);
if (result == ISC_R_SUCCESS) {
contact = cfg_obj_asstring(obj);
} else {
contact = NULL;
}
name = dns_fixedname_initname(&fixed);
for (ipv4only_zone = 0; ipv4only_zone < ARRAYSIZE(zones);
ipv4only_zone++) {
dns_forwarders_t *dnsforwarders = NULL;
CHECK(dns_name_fromstring(
name, zones[ipv4only_zone].name, 0, NULL));
(void)dns_view_findzone(view, name, &zone);
if (zone != NULL) {
dns_zone_detach(&zone);
continue;
}
/*
* If we would forward this name don't add it.
*/
result = dns_fwdtable_find(view->fwdtable, name, NULL,
&dnsforwarders);
if (result == ISC_R_SUCCESS &&
dnsforwarders->fwdpolicy == dns_fwdpolicy_only) {
continue;
}
/*
* See if we can re-use a existing zone.
*/
result = dns_viewlist_find(&named_g_server->viewlist,
view->name, view->rdclass,
&pview);
if (result != ISC_R_NOTFOUND && result != ISC_R_SUCCESS)
{
goto cleanup;
}
if (pview != NULL) {
(void)dns_view_findzone(pview, name, &zone);
dns_view_detach(&pview);
}
CHECK(create_ipv4only_zone(zone, view, name,
zones[ipv4only_zone].type,
mctx, server, contact));
if (zone != NULL) {
dns_zone_detach(&zone);
}
}
}
obj = NULL;
result = named_config_get(maps, "rate-limit", &obj);
if (result == ISC_R_SUCCESS) {

View file

@ -1429,5 +1429,24 @@ n=`expr $n + 1`
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`
echo_i "checking synthesis of AAAA from builtin ipv4only.arpa ($n)"
ret=0
$DIG $DIGOPTS aaaa ipv4only.arpa -b 10.53.0.7 @10.53.0.2 > dig.out.ns2.test$n || ret=1
grep -i 'ipv4only.arpa.*IN.AAAA.2001:96::c000:aa' dig.out.ns2.test$n >/dev/null || ret=1
grep -i 'ipv4only.arpa.*IN.AAAA.2001:96::c000:ab' dig.out.ns2.test$n >/dev/null || ret=1
n=`expr $n + 1`
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`
echo_i "checking reverse of dns64 mapped ipv4only.arpa addresses returns ipv4only.arpa ($n)"
ret=0
$DIG $DIGOPTS ptr -x 2001:96::192.0.0.170 -b 10.53.0.7 @10.53.0.2 > dig.out.170.ns2.test$n || ret=1
$DIG $DIGOPTS ptr -x 2001:96::192.0.0.171 -b 10.53.0.7 @10.53.0.2 > dig.out.171.ns2.test$n || ret=1
grep "ip6\.arpa\..*PTR.*ipv4only\.arpa\." dig.out.170.ns2.test$n >/dev/null || ret=1
grep "ip6\.arpa\..*PTR.*ipv4only\.arpa\." dig.out.171.ns2.test$n >/dev/null || ret=1
n=`expr $n + 1`
if [ $ret != 0 ]; then echo_i "failed"; fi
status=`expr $status + $ret`
echo_i "exit status: $status"
[ $status -eq 0 ] || exit 1

View file

@ -1365,6 +1365,9 @@ default is used.
contact for the zones. These can be set at the view/options
level but not on a per-prefix basis.
``dns64`` will also cause IPV4ONLY.ARPA to be created if not
explicitly disabled using ``ipv4only-enable``.
Each ``dns64`` supports an optional ``clients`` ACL that determines
which clients are affected by this directive. If not defined, it
defaults to ``any;``.
@ -1659,6 +1662,12 @@ Boolean Options
This option was part of an experimental implementation of the EDNS
CLIENT-SUBNET for authoritative servers, but is now obsolete.
``ipv4only-enable``
Create the IPV4ONLY.ARPA zone as described in RFC 8880. By
default the zone is only created if a DNS64 prefix is configured.
Control the SOA contact and server values with ``ipv4only-contact``
and ``ipv4only-server`` respectively.
``root-key-sentinel``
If ``yes``, respond to root key sentinel probes as described in
draft-ietf-dnsop-kskroll-sentinel-08. The default is ``yes``.

View file

@ -327,6 +327,9 @@ options {
hostname ( quoted_string | none );
inline\-signing boolean;
interface\-interval duration;
ipv4only\-contact string;
ipv4only\-enable boolean;
ipv4only\-server string;
ixfr\-from\-differences ( primary | master | secondary | slave |
boolean );
keep\-response\-order { address_match_element; ... };
@ -735,6 +738,9 @@ view string [ class ] {
| ipv6_address ) [ port integer ] [ dscp integer ]; ... };
glue\-cache boolean;// deprecated
inline\-signing boolean;
ipv4only\-contact string;
ipv4only\-enable boolean;
ipv4only\-server string;
ixfr\-from\-differences ( primary | master | secondary | slave |
boolean );
key string {

View file

@ -215,6 +215,9 @@ options {
hostname ( <quoted_string> | none );
inline-signing <boolean>;
interface-interval <duration>;
ipv4only-contact <string>;
ipv4only-enable <boolean>;
ipv4only-server <string>;
ixfr-from-differences ( primary | master | secondary | slave |
<boolean> );
keep-response-order { <address_match_element>; ... };
@ -589,6 +592,9 @@ view <string> [ <class> ] {
| <ipv6_address> ) [ port <integer> ] [ dscp <integer> ]; ... };
glue-cache <boolean>; // deprecated
inline-signing <boolean>;
ipv4only-contact <string>;
ipv4only-enable <boolean>;
ipv4only-server <string>;
ixfr-from-differences ( primary | master | secondary | slave |
<boolean> );
key <string> {

View file

@ -192,6 +192,9 @@ options {
hostname ( <quoted_string> | none );
inline-signing <boolean>;
interface-interval <duration>;
ipv4only-contact <string>;
ipv4only-enable <boolean>;
ipv4only-server <string>;
ixfr-from-differences ( primary | master | secondary | slave |
<boolean> );
keep-response-order { <address_match_element>; ... };
@ -529,6 +532,9 @@ view <string> [ <class> ] {
| <ipv6_address> ) [ port <integer> ] [ dscp <integer> ]; ... };
glue-cache <boolean>; // deprecated
inline-signing <boolean>;
ipv4only-contact <string>;
ipv4only-enable <boolean>;
ipv4only-server <string>;
ixfr-from-differences ( primary | master | secondary | slave |
<boolean> );
key <string> {

View file

@ -120,6 +120,9 @@
hostname ( <quoted_string> | none );
inline-signing <boolean>;
interface-interval <duration>;
ipv4only-contact <string>;
ipv4only-enable <boolean>;
ipv4only-server <string>;
ixfr-from-differences ( primary | master | secondary | slave |
<boolean> );
keep-response-order { <address_match_element>; ... };

View file

@ -90,6 +90,7 @@ or Best Current Practice (BCP) documents. The list is non exhaustive.
RFC6891
RFC6944
RFC7043
RFC7050 [21]
RFC7314
RFC7344 [20]
RFC7477
@ -98,6 +99,7 @@ or Best Current Practice (BCP) documents. The list is non exhaustive.
RFC7830 [15]
RFC7929
RFC8080
RFC8880
No longer supported
@ -182,3 +184,5 @@ to the experimental category by RFC3363.
[19] RSAMD5 support has been removed. See RFC 6944.
[20] Updating of parent zones is not yet implemented.
[21] RFC 7050 is updated by RFC 8880

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@ -55,6 +55,8 @@ Feature Changes
needs to be changed when operator wants to change the default EDNS buffer
size. [GL #2250]
- ``ipv4only.arpa`` is now served when ``dns64`` is configured. [GL #385]
Bug Fixes
~~~~~~~~~

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@ -2022,6 +2022,9 @@ static cfg_clausedef_t view_clauses[] = {
{ "filter-aaaa-on-v4", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
{ "filter-aaaa-on-v6", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
{ "glue-cache", &cfg_type_boolean, CFG_CLAUSEFLAG_DEPRECATED },
{ "ipv4only-enable", &cfg_type_boolean, 0 },
{ "ipv4only-contact", &cfg_type_astring, 0 },
{ "ipv4only-server", &cfg_type_astring, 0 },
{ "ixfr-from-differences", &cfg_type_ixfrdifftype, 0 },
{ "lame-ttl", &cfg_type_duration, 0 },
#ifdef HAVE_LMDB