[uml-user] Speed problem starting brctl

[Brian E. <be...@sa...>]

Hi,

My problem is that when the system first boots up, it takes an extremely
long time (read 4+ hours) for my UML to respond on a public IP address.
Lets say that I have a UML configured to listen on both public IP
address 1.2.3.4 and private IP address 192.168.1.1

When the UML boots, the private IP address is immediately active. Then,
in about 4 hours the system begins to also respond on the public IP
address. 

When the system first boots, I have a script running the following: 

	# Load the tun module
        modprobe tun

        # Remove the ip addresses of the devices
        ifconfig eth0 0.0.0.0 promisc up
        ifconfig eth1 0.0.0.0 promisc up

        # Add the internal uml-bridge 
        brctl addbr uml-int0
        brctl setfd uml-int0 1
        brctl sethello uml-int0 1
        brctl stp uml-int0 off

        ifconfig uml-int0 0.0.0.0 promisc up

        brctl addif uml-int0 eth0
(Just in case you were wondering... eth0 is our internal interface, eth1
is the external interface)

	# Add the external uml-bridge
        brctl addbr uml-ext0
        brctl setfd uml-ext0 1
        brctl sethello uml-ext0 1
        brctl stp uml-ext0 off

        ifconfig uml-ext0 0.0.0.0 promisc up

        brctl addif uml-ext0 eth1

Then when the UML boots it runs 
	tunctl -t uml-test0
	tunctl -t uml-test1
	ifconfig uml-test0 promisc up
	ifconfig uml-test1 promisc up
	brctl addif uml-ext0 uml-test0
	brctl addif uml-int0 uml-test1

So then to run the UML I use the command

	linux mem=128M ubd0=UML_rootfs eth0=tuntap,uml-test0
eth1=tuntap,uml-test1 umid=test

After the UML is shut down, I run 
	brctl delif uml-ext0 uml-test0
	brctl delif uml-int0 uml-test1
	ifconfig uml-test0 down
	ifconfig uml-test1 down
	tunctl -d uml-test0
	tunctl -d uml-test1

And for the most part this works great. Like I said, it takes about 4
hours for the public IP address to work though. I also had the same
problem if I tried to change which UML was bringing up a public IP
address (switching from one UML to another). I imagine I am probably
just doing something stupid along the way. Once the first public IP
address is active, I can bring up a second UML on a different public IP
address and it is immediately available. 

My setup:

Host: RedHat 7.3 with kernel 2.4.26 with SKAS3 and /dev/anon patch
brctl version: 0.9.3-4
UML kernel: 2.6.6 (with UML patch of course)
UML file system: Debian stable
ISP: Road Runner

Thanks!