[trouble] restart network & vlan`s interface

[sam]

hello

description of my trouble:

part of /etc/rc.conf
--------------------------------------
|cloned_interfaces="vlan0"
ifconfig_vlan0="inet 10.25.6.20 netmask 255.255.255.0 vlan 11 vlandev rl0"
|--------------------------------------

part of command output (/etc/rc.d/netif restart && /etc/rc.d/routing 
restart)
--------------------------------------
|Stopping network: lo0 rl0 pfsync0 pflog0 vlan0.
ifconfig: SIOCIFCREATE2: File exists
ifconfig: SIOCSETVLAN: Device busy|
--------------------------------------
after - vlan0 is not configured

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# uname -rms
FreeBSD 7.0-PRERELEASE i386
--------------------------------------

please help me for writing  /etc/rc.conf with  vlan`s  interfaces 
(without problem network sub-system restart)

/Vladimir Ermakov