Wireshark-bugs: [Wireshark-bugs] [Bug 3931] New: ND Proxy Flag for IPv6 RA flag - RFC 4389 sec 4
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3931
Summary: ND Proxy Flag for IPv6 RA flag - RFC 4389 sec 4.1.3.3
Product: Wireshark
Version: 1.2.1
Platform: All
OS/Version: All
Status: NEW
Severity: Minor
Priority: Medium
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: ivan_jr@xxxxxxxxx
Ivan Sy <ivan_jr@xxxxxxxxx> changed:
What |Removed |Added
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Attachment #3558| |review_for_checkin?
Flag| |
Created an attachment (id=3558)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=3558)
IPv6_RA_flag_RFC4389.patch
Build Information:
Version 1.3.0-SVN-29505
Copyright 1998-2009 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Compiled with GTK+ 2.16.2, with GLib 2.20.3, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with c-ares 1.6.0, with Lua 5.1, without Python, with GnuTLS 2.8.1, with Gcrypt
1.4.4, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built Aug 22
2009), with AirPcap.
Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1
beta5
(packet.dll version 4.1.0.1452), based on libpcap version 1.0.0, GnuTLS 2.8.1,
Gcrypt 1.4.4, without AirPcap.
Built using Microsoft Visual C++ 9.0 build 30729
Wireshark is Open Source Software released under the GNU General Public
License.
Check the man page and http://www.wireshark.org for more information.
--
RFC 4389 - Neighbor Discovery Proxies (ND Proxy)
...
section
4.1.3.3. ICMPv6 Router Advertisements
The following special processing is done for IPv6 Router
Advertisements (RAs).
A new "Proxy" bit is defined in the existing Router Advertisement
flags field as follows:
+-+-+-+-+-+-+-+-+
|M|O|H|Prf|P|Rsv|
+-+-+-+-+-+-+-+-+
where "P" indicates the location of the Proxy bit, and "Rsv"
indicates the remaining reserved bits.
The proxy determines an "upstream" proxy interface, typically through
a (zero-configuration) physical choice dictated by the scenario (see
Scenarios 1 and 2 above), or through manual configuration.
When an RA with the P bit clear arrives on the upstream interface,
the P bit is set when the RA is proxied out all other ("downstream")
proxy interfaces (see Section 6).
----
also see
section 3 RFC 5175 IPv6 Router Advertisement Flags Option
see patch and sample packet capture
fyi.. will work later on getting icmpv6 dissector (EFO type#26) RFC5175
thanks!
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