diff options
| author |   itojun <itojun@openbsd.org> | 2001-06-11 10:05:58 +0000 |
|---|---|---|
| committer | itojun <itojun@openbsd.org> | 2001-06-11 10:05:58 +0000 |
| commit | 79b6bf3810c779d4cdf1ed77d50b4d728acf5146 (patch) | |
| tree | bb8d2c63208a98cf72a86d1014a11e2f1e24262a /lib/libc/net/res_debug.c | |
| parent | Remove workaround for a gas bug fixed in binutils-2.10.1. (diff) | |
| download | wireguard-openbsd-79b6bf3810c779d4cdf1ed77d50b4d728acf5146.tar.xz wireguard-openbsd-79b6bf3810c779d4cdf1ed77d50b4d728acf5146.zip | |
support EDNS0 (RFC2671) buffer size notification on DNS queries.
"options edns0" in /etc/resolv.conf will enable the behavior. no behavior
change if you don't have the line. see resolv.conf(5) for more details.
EDNS0 is useful for avoiding TCP DNS queries/replies on larger DNS responses.
also, draft-ietf-dnsext-message-size-* plans to mandate EDNS0 support for DNS
clients that support IPv6 transport.
Diffstat (limited to 'lib/libc/net/res_debug.c')
| -rw-r--r-- | lib/libc/net/res_debug.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/libc/net/res_debug.c b/lib/libc/net/res_debug.c index e1894b15086..54be69cef74 100644 --- a/lib/libc/net/res_debug.c +++ b/lib/libc/net/res_debug.c @@ -1,4 +1,4 @@ -/* $OpenBSD: res_debug.c,v 1.10 2000/07/07 20:59:47 deraadt Exp $ */ +/* $OpenBSD: res_debug.c,v 1.11 2001/06/11 10:05:59 itojun Exp $ */ /* * ++Copyright++ 1985, 1990, 1993 @@ -82,7 +82,7 @@ static char sccsid[] = "@(#)res_debug.c 8.1 (Berkeley) 6/4/93"; static char rcsid[] = "$From: res_debug.c,v 8.19 1996/11/26 10:11:23 vixie Exp $"; #else -static char rcsid[] = "$OpenBSD: res_debug.c,v 1.10 2000/07/07 20:59:47 deraadt Exp $"; +static char rcsid[] = "$OpenBSD: res_debug.c,v 1.11 2001/06/11 10:05:59 itojun Exp $"; #endif #endif /* LIBC_SCCS and not lint */ @@ -1028,6 +1028,8 @@ __p_option(option) case RES_DNSRCH: return "dnsrch"; case RES_INSECURE1: return "insecure1"; case RES_INSECURE2: return "insecure2"; + case RES_USE_INET6: return "inet6"; + case RES_USE_EDNS0: return "edns0"; default: sprintf(nbuf, "?0x%lx?", (u_long)option); return (nbuf); } |