ignore some specific interfaces, such as non-hotpluggable eth*, ipsec*

ignore some specific interfaces, such as non-hotpluggable eth*, ipsec*

[Fumitoshi UKAI]

Hi,

I've received some bug reports or wish requests to ignore some
specific network interfaces, such as non-hotpluggable eth* or ipsec*.
David Engel <david@debian.org>, submitter of Bug#132224, suggests
the following patch.

--- net.agent.orig      Mon Jan 14 11:25:25 2002
+++ net.agent   Sun Feb  3 14:54:51 2002
@@ -25,6 +25,13 @@
     exit 1
 fi
 
+case $INTERFACE in
+    # interfaces that should be ignored altogether
+    ipsec*)  
+       exit 0
+       ;;
+esac
+
 case $ACTION in
 register)
 
Although, I think pattern "ipsec*" should be configurable in
/etc/default/hotplug (or /etc/sysconfig/hotplug on RedHat, maybe),
does it make sense to apply such patch to net.agent?

Thanks,
Fumitoshi UKAI

PS.
See more detail, look at http://bugs.debian.org/hotplug
 #108857: hotplug should not invoke ifup ethX for built in interfaces
 #132224: hotplug should ignor ipsec interfaces

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Re: ignore some specific interfaces, such as non-hotpluggable eth*,

[David Brownell]

> Although, I think pattern "ipsec*" should be configurable in
> /etc/default/hotplug (or /etc/sysconfig/hotplug on RedHat, maybe),
> does it make sense to apply such patch to net.agent?

Until the network device initialization model acquires some
consistency, I don't see a better solution than continuing to
add more special cases.  Which won't work in all cases,
but I think that won't be a risk for the "ipsec" interfaces
(132224) or ppp ones in the way it would be for "eth"
interfaces (108857).

FYI with 108857 I think the bug might best be fixed in
the "ifup" code:  if hotplug is doing its job, then that any
"ifup does modprobe" usage should expect that, and so
it should stop after the modprobe -- or find a way to tell
hotplug it should _in this case_ ignore that interface.

- Dave


> See more detail, look at http://bugs.debian.org/hotplug

    Some of those might better be redirected upstream,
    to the sf.net linux-hotplug bug database ... :)

>  #108857: hotplug should not invoke ifup ethX for built in interfaces
>  #132224: hotplug should ignor ipsec interfaces




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