Missing options: RES_INSECURE1, RES_INSECURE2, RES_NOALIASES, USE_INET6, ROTATE, NOCHECKNAME, RES_KEEPTSIG, BLAST, USEBSTRING, NOIP6DOTINT, USE_EDNS0, SNGLKUP, SNGLKUPREOP, RES_USE_DNSSEC, NOTLDQUERY, DEFAULT Written from the glibc source and resolv.conf.5. Debian bug #527136 reported by Jakub Wilk <ubanus@xxxxxxxxxxxx> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=527136 Signed-off-by: Stéphane Aulery <saulery@xxxxxxx> --- man3/resolver.3 | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 91 insertions(+), 8 deletions(-) diff --git a/man3/resolver.3 b/man3/resolver.3 index 19c4192..06704b1 100644 --- a/man3/resolver.3 +++ b/man3/resolver.3 @@ -197,19 +197,20 @@ which is not the default. Accept authoritative answers only. .BR res_send () continues until -it finds an authoritative answer or returns an error. [Not currently -implemented]. +it finds an authoritative answer or returns an error. +[Not currently implemented]. .TP .B RES_USEVC Use TCP connections for queries rather than UDP datagrams. .TP .B RES_PRIMARY Query primary domain name server only. +[Not currently implemented]. .TP .B RES_IGNTC Ignore truncation errors. -Don't retry with TCP. [Not currently -implemented]. +Don't retry with TCP. +[Not currently implemented]. .TP .B RES_RECURSE Set the recursion desired bit in queries. @@ -238,10 +239,92 @@ domain and in parent domains. This option is used by .BR gethostbyname (3). [Enabled by default]. -.PP -This list is not complete. -You can find some other flags described in -.BR resolv.conf (5). +.TP +.B RES_INSECURE1 +Accept a response from a wrong server and show it on standard output +(for debug purpose only). +.TP +.B RES_INSECURE2 +Accept a response which contains a wrong query and show it on standard +output (for debug purpose only). +.TP +.B RES_NOALIASES +Disable usage of +.B HOSTALIASES +environment variable. +.TP +.B RES_USE_INET6 +Try an AAAA query before an A query inside the +.BR gethostbyname () +function, and map IPv4 responses in IPv6 "tunneled form" if no AAAA records +are found but an A record set exists. +.TP +.B RES_ROTATE +Causes round-robin selection of name servers from among those listed. +This has the effect of spreading the query load among all listed servers, +rather than having all clients try the first listed server first every +time. +.TP +.B RES_NOCHECKNAME +Disable the modern BIND checking of incoming hostnames and mail names +for invalid characters such as underscore (_), non-ASCII, +or control characters. +[Not currently implemented]. +.TP +.B RES_KEEPTSIG +Do not strip TSIG records. +[Not currently implemented]. +.TP +.B RES_BLAST +Send each query simultaneously and recursively to all servers. +Note this option overrides +.BR RES_ROTATE . +.TP +.BR RES_USEBSTRING " (since glibc 2.3.4)" +Make reverse IPv6 lookups using the bit-label format described in RFC 2673; +if this option is not set, then nibble format is used. +.TP +.B RES_NOIP6DOTINT +Use +.I ip6.arpa +zone in IPv6 reverse lookup instead of +.IR ip6.int , +which is deprecated since glibc 2.3.4. +[Enabled by default]. +.TP +.BR RES_USE_EDNS0 " (since glibc 2.6)" +Enables support for the DNS extensions (EDNS0) described in RFC 2671. +.TP +.BR RES_SNGLKUP " (since glibc 2.10)" +By default, glibc performs IPv4 and IPv6 lookups in parallel since +version 2.9. +Some appliance DNS servers cannot handle these queries properly +and make the requests time out. +This option disables the behavior and makes glibc +perform the IPv6 and IPv4 requests sequentially +(at the cost of some slowdown of the resolving process). +.TP +.B RES_SNGLKUPREOP +When +.B RES_SNGLKUP +option is enabled, opens a new socket for the each request. +.TP +.B RES_USE_DNSSEC +Use DNSSEC with OK bit in OPT record. +This option implies +.BR RES_USE_EDNS0 . +.TP +.B RES_NOTLDQUERY +Do not look up unqualified name as a top-level domain (TLD). +.TP +.B RES_DEFAULT +Default option which implies: +.BR RES_RECURSE , +.BR RES_DEFNAMES , +.BR RES_DNSRCH +and +.BR RES_NOIP6DOTINT . + .SH RETURN VALUE The .BR res_init () -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
