ifconfig tells me that multicast is enabled for eth1, but not for lo.
With purinrecv, I always get the same result, which is pasted below.
One interesting thing is the first line - it always appears, does it
mean anything? :)
(eth0 is another NIC that is not in use at the moment; for my test
program, I used eth1.)
$ ./ref/debug-Linux-x86_64/examples/purinrecv -i
??? ???
Info: #1 name lo (lo)
---- scope 0 status UP
loop YES b/c NO m/c NO
Info: #2 name eth0 (eth0)
---- scope 0 status DOWN
loop NO b/c YES m/c YES
Info: #3 name eth1 (eth1)
---- scope 0 status UP
loop NO b/c YES m/c YES
Info: #1 name lo (lo) IPv4
127.0.0.1 scope 0 status UP loop
YES b/c NO m/c NO
Info: #3 name eth1 (eth1) IPv4
192.168.178.14 scope 0 status UP loop
NO b/c YES m/c YES
Info: #1 name lo (lo) IPv6
::1 scope 0 status UP loop
YES b/c NO m/c NO
Info: #3 name eth1 (eth1) IPv6
fe80::219:d1ff:fe51:6718%eth1 scope 3 status UP loop
NO b/c YES m/c YES
Oh, and one other thing I've noticed is that sometimes it takes up to a
second for connect() to finish. Most of the time its done nearly
instantly, though.
On 6 November 2010 18:06, dv <d...@pseudoterminal.org
<mailto:d...@pseudoterminal.org>> wrote:
I dug through the code, went inside the OpenPGM copy bundled with
zeromq, and found the function parse_interface()
in if.c:276 . Full path (relative to the zeromq directory) is
foreign/openpgm/libpgm-5.0.91~dfsg/openpgm/pgm/if.c .
The parse_interface() function is what ultimately causes the
assert - it
looks at the given network interfaces and tries to find a
multicast-capable one.
For some reason, this does not always work reliably.
Can you see the problem with ifconfig, or by building OpenPGM
separately and running "purinrecv -i" to enumerate interfaces and
flags on the host? It sounds like a kernel bug to log in Launchpad,
could you try a different version such as from the kernel-ppa?
Worst case I could add an override to disable the checks.
--
Steve-o
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