Bug 586114 - ping6 does not support -F flowlabel and nexthop option
Summary: ping6 does not support -F flowlabel and nexthop option
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: iputils
Version: 6.0
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Jiri Skala
QA Contact: Martin Cermak
Depends On:
TreeView+ depends on / blocked
Reported: 2010-04-26 20:11 UTC by Peter Bieringer
Modified: 2014-11-09 22:32 UTC (History)
6 users (show)

Fixed In Version: iputils-20071127-12.el6
Doc Type: Bug Fix
Doc Text:
Clone Of: 583976
Last Closed: 2010-11-10 20:41:22 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description Peter Bieringer 2010-04-26 20:11:05 UTC
Final RHEL6 should be also have fixed this issue because of:

Next generation networking: comprehensive IPv6 support

# rpm -qf `which ping6` 

# ping6 -c 1000 -f ::1 -F 12345
Flow labels are not supported.

 LC_ALL=C ping6 -c 1 ::1 ::1
PING ::1(::1) 56 data bytes
ping: sendmsg: Invalid argument

+++ This bug was initially created as a clone of Bug #583976 +++

Description of problem:
ping6 does not support -F flowlabel option

Version-Release number of selected component (if applicable):
# rpm -qf `which ping6` 

How reproducible:

Steps to Reproduce:

# ping6 -c 1000 -f ::1 -F 12345

Actual results:

Flow labels are not supported.
(no ping)

Expected results:

Supported Flow Labels

Additional info:


# ping6 -c 1000 -f ::1 
PING ::1(::1) 56 data bytes
--- ::1 ping statistics ---
1000 packets transmitted, 1000 received, 0% packet loss, time 45ms
rtt min/avg/max/mdev = 0.007/0.019/5.680/0.193 ms, ipg/ewma 0.045/0.008 ms

--- Additional comment from pb@bieringer.de on 2010-04-22 13:21:59 EDT ---

Perhaps related: https://bugzilla.redhat.com/show_bug.cgi?id=583985

--- Additional comment from jskala@redhat.com on 2010-04-23 10:03:51 EDT ---

This isn't related to traceroute issue.

The flowlabel functionality is disabled by default therefore "Flow labels are not supported" message is printed.

Simple enabling doesn't fix it due to problems with headers. I have to investigate it a bit.

--- Additional comment from pb@bieringer.de on 2010-04-24 06:45:11 EDT ---

During investigation, would be nice if you can also look into the next hop option (source routing), which is not working for IPv6 at all: 

# ping6 -c 1 2001:xxxx:xxxx:65::1 2001:xxxx:xxxx:66:5054:ff:fexx:xxxx
PING ipv6-client-b(ipv6-client-b) 56 data bytes
ping: sendmsg: Invalid argument

IPv4 works (after enabling accept IPv4 source routing on all participating nodes):
# ping ipv4-client-b
PING ipv4-client-b ( 56(124) bytes of data.
64 bytes from ipv4-client-b ( icmp_seq=1 ttl=63 time=2.78 ms
LSRR: 	ipv4-router-c-65 (

Comment 2 RHEL Program Management 2010-04-26 21:27:00 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for

Comment 3 Jiri Skala 2010-04-29 20:08:44 UTC
Flowlabel functionality is disabled using ifdef. This state is probably intentionally because there is no definition of flowlabel structure in glibc. Kernel headers containing necessary definition conflicts with glib.
I've asked glibc package owner about future support of flowlabel structure in the original bug (#583976). Currently no answer.

I've sent an inquiry to upstream if disabling flowlabel relates to kernel/glibc headers conflicting.

I prefer enabling flowlabel if there is sufficient support in glibc.

Comment 7 Martin Cermak 2010-09-17 06:10:28 UTC

Comment 8 releng-rhel@redhat.com 2010-11-10 20:41:22 UTC
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.

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