Bug 368657 – net-misc/vde: service should start before net.${VDE_TAP}

• Product: Gentoo Linux
• Status: RESOLVED INVALID

[Description Sok Ann Yap 2011-05-25 07:29:05 UTC]

Currently, the vde service is set to start after net.${VDE_TAP}. If I understand it correctly, the tap interface is supposed to be created by the vde service, so the "after" should be changed to "before".

Reproducible: Always

[Comment 1 Nico Baggus 2011-05-31 22:30:39 UTC]

If you create a tap interface yourself it needs to be done BEFORE vde runs ==> 
after net.${VDE_TAP}.

If there is no net.${VDE_TAP} then there is no wait.

So IMHO it should be after.

[Comment 2 Sok Ann Yap 2011-05-31 22:39:00 UTC]

Well, here's my use case: I let the vde service creates a tap0 interface, have a config for tap0 in /etc/conf.d/net, and have both vde and net.tap0 at the default runlevel. For this to work, I need "before net.${VDE_TAP}".

[Comment 3 Nico Baggus 2011-05-31 23:46:03 UTC]

if it needs to be configurable then maybe it needs to go to the /etc/conf.d/net
either:
  RC_AFTER_tap0="vde"
or:
  RC_BEFORE_tap0="vde"

so anyone can decide which one is needed.
maybe an example needs to be added to /etc/conf.d/net?

[Comment 4 Daniel Gryniewicz (RETIRED) 2011-06-01 00:33:27 UTC]

net.${VDE_TAP} is fully capable of creating the tap device, so it shouldn't be necessary to have vde create it, and you shouldn't even have to change anything in the vde config file.  I'm not sure it's desirable to add that kind of complexity to vde, since it works fine either with or without a net.${VDE_TAP} device.

Do you have a scenario where it can't be made to work?  If so, could you detail it for me?

[Comment 5 Sok Ann Yap 2011-06-01 01:05:07 UTC]

> net.${VDE_TAP} is fully capable of creating the tap device

That's the part I don't quite understand (as mentioned in the bug description). How do I get a tap0 interface without running vde_switch tap0 first?

My current setup is rather simple:

1. cd /etc/init.d; ln -s net.lo net.tap0
2. rc-update add net.tap0 default
3. rc-update add vde default
4. echo "config_tap0="192.168.4.1/24"" >> /etc/conf.d/net
5. sed -i -e "s|after net|before net|" /etc/init.d/vde

[Comment 6 Nico Baggus 2011-06-01 01:40:59 UTC]

adding 

tuntap_tap0=tap

to /etc/conf.d/net 
creates a tap0 device with all strings attached.

[Comment 7 Sok Ann Yap 2011-06-01 01:48:45 UTC]

Didn't know that. Works great :)

[Comment 8 Daniel Gryniewicz (RETIRED) 2011-06-01 02:09:35 UTC]

It's in the net.example (although that's harder to find in baselayout2...)  So, not a bug, then, I believe.  Re-open if it's still and issue.