[Spread-users] spread-5.0.0rc1 : old way to explicitly select an interface by IP in spread.conf fails

[Martin Schu]

Hi,

here is an observation while testing spread-5.0.0rc1 in our Linux (RHEL)
environment:

With spread-5 a new way to configure interfaces by name has been introduced
in spread.conf (IPv6address%ifname).

The old way to explicitly select an interface by configuring its IP address
(192.168.2.109 {192.168.2.109}) in spread.conf should be working too, but
something is strange here with spread-5. We are using that old way in our
spread.conf because we don't know the ifnames at other hosts.

In spread-4.4 the redundant explicit choice of an interface by IP address
was accepted.
Seemingly spread-5 ist trying to bind the same interface twice in this
case, which is failing of course.

Net_init: explicit: binding a recv bcast channel to [192.168.2.105]:5892
Net_init: explicit: binding an extra recv bcast channel to [192.168.2.109]:5892
DL_init_channel_gen: bind error (99: Cannot assign requested address)
for [192.168.2.109]:5892; probably already running!

If I remove the explicit configuration of a specific interface by IP
address from spread.conf everything is working fine with spread-5.

But we need to explicitly configure the interfaces by IP address, because
we observed in rare cases some wrong interface choice by spread-4.4 when we
rely on the implicit automatic choice. In rare cases we saw in netstat -g
some binding to a wrong interface. This is the reason why we want to use
the explicit choice.

Kind regards,
Martin

2016-12-06 12:46:11 GMT Disabling Dangerous Monitor Commands!
2016-12-06 12:46:11 GMT Setting SO_REUSEADDR to auto
2016-12-06 12:46:11 GMT Hash value for this configuration is: 2769325100
2016-12-06 12:46:11 GMT Finished configuration file.
2016-12-06 12:46:11 GMT Conf_load_conf_file: using sin6_scope_id 0 for
interface 192.168.2.105
2016-12-06 12:46:11 GMT Conf_load_conf_file: My name: easy1al1, id:
3220897676, addr: 192.168.2.105, port: 5892
2016-12-06 12:46:11 GMT E_init: went ok
2016-12-06 12:46:11 GMT Net_signal_conf_reload: Bcast needed
2016-12-06 12:46:11 GMT Net_init: explicit: binding a recv bcast
channel to [192.168.2.105]:5892
2016-12-06 12:46:11 GMT Net_init: explicit: binding a recv token
channel to [192.168.2.105]:5893
2016-12-06 12:46:11 GMT Net_init: explicit: binding an extra recv
bcast channel to [192.168.2.109]:5892
2016-12-06 12:46:11 GMT DL_init_channel_gen: bind error (99: Cannot
assign requested address) for [192.168.2.109]:5892; probably already
running!
Exit caused by Alarm!
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.spread.org/pipermail/spread-users/attachments/20161208/e4236456/attachment.html>