Add EDNS0 support.

EDNS allows for various DNS extensions, among which UDP DNS packets size bigger than 512 bytes. The default is still to not advertize anything. ok eric@
author: jca <> 2017-02-18 19:23:05 +0000
committer: jca <> 2017-02-18 19:23:05 +0000
commit: f5687e58de136104a8aedcd260a57135fbb9572c (patch)
tree: 8ecfc04c754925db7c79a93f436e7aae19ac83d5 /src/lib
parent: a6dac7f3fc954bd3eac151bdc87f9f3b798a4f28 (diff)
download: openbsd-f5687e58de136104a8aedcd260a57135fbb9572c.tar.gz
openbsd-f5687e58de136104a8aedcd260a57135fbb9572c.tar.bz2
openbsd-f5687e58de136104a8aedcd260a57135fbb9572c.zip
1 files changed, 3 insertions, 4 deletions
diff --git a/src/lib/libc/net/resolver.3 b/src/lib/libc/net/resolver.3
index c395c9929b..68e509f4f0 100644
--- a/src/lib/libc/net/resolver.3
+++ b/src/lib/libc/net/resolver.3
@@ -1,4 +1,4 @@
-.\"     $OpenBSD: resolver.3,v 1.35 2017/01/24 12:43:00 jmc Exp $
+.\"     $OpenBSD: resolver.3,v 1.36 2017/02/18 19:23:05 jca Exp $
 .\"
 .\" Copyright (c) 1985, 1991, 1993
 .\"     The Regents of the University of California.  All rights reserved.
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: January 24 2017 $
+.Dd $Mdocdate: February 18 2017 $
 .Dt RES_INIT 3
 .Os
 .Sh NAME
@@ -193,9 +193,8 @@ allowing them to take advantage of a non-default receive buffer size,
 and thus to send larger replies.
 DNS query packets with the EDNS0 extension are not compatible with
 non-EDNS0 DNS servers.
-On
 .Ox
-this option does nothing.
+uses 4096 bytes as input buffer size.
 .It Dv RES_USE_DNSSEC
 Request that the resolver uses
 Domain Name System Security Extensions (DNSSEC),
author	jca <>	2017-02-18 19:23:05 +0000
committer	jca <>	2017-02-18 19:23:05 +0000
commit	f5687e58de136104a8aedcd260a57135fbb9572c (patch)
tree	8ecfc04c754925db7c79a93f436e7aae19ac83d5 /src/lib
parent	a6dac7f3fc954bd3eac151bdc87f9f3b798a4f28 (diff)
download	openbsd-f5687e58de136104a8aedcd260a57135fbb9572c.tar.gz openbsd-f5687e58de136104a8aedcd260a57135fbb9572c.tar.bz2 openbsd-f5687e58de136104a8aedcd260a57135fbb9572c.zip

diff --git a/src/lib/libc/net/resolver.3 b/src/lib/libc/net/resolver.3 index c395c9929b..68e509f4f0 100644 --- a/src/lib/libc/net/resolver.3 +++ b/src/lib/libc/net/resolver.3
@@ -1,4 +1,4 @@
1	.\" $OpenBSD: resolver.3,v 1.35 2017/01/24 12:43:00 jmc Exp $	1	.\" $OpenBSD: resolver.3,v 1.36 2017/02/18 19:23:05 jca Exp $
2	.\"	2	.\"
3	.\" Copyright (c) 1985, 1991, 1993	3	.\" Copyright (c) 1985, 1991, 1993
4	.\" The Regents of the University of California. All rights reserved.	4	.\" The Regents of the University of California. All rights reserved.
@@ -27,7 +27,7 @@
27	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF	27	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28	.\" SUCH DAMAGE.	28	.\" SUCH DAMAGE.
29	.\"	29	.\"
30	.Dd $Mdocdate: January 24 2017 $	30	.Dd $Mdocdate: February 18 2017 $
31	.Dt RES_INIT 3	31	.Dt RES_INIT 3
32	.Os	32	.Os
33	.Sh NAME	33	.Sh NAME
@@ -193,9 +193,8 @@ allowing them to take advantage of a non-default receive buffer size,
193	and thus to send larger replies.	193	and thus to send larger replies.
194	DNS query packets with the EDNS0 extension are not compatible with	194	DNS query packets with the EDNS0 extension are not compatible with
195	non-EDNS0 DNS servers.	195	non-EDNS0 DNS servers.
196	On
197	.Ox	196	.Ox
198	this option does nothing.	197	uses 4096 bytes as input buffer size.
199	.It Dv RES_USE_DNSSEC	198	.It Dv RES_USE_DNSSEC
200	Request that the resolver uses	199	Request that the resolver uses
201	Domain Name System Security Extensions (DNSSEC),	200	Domain Name System Security Extensions (DNSSEC),