"ifconfig -vlandev" syntax

Yar Tikhiy yar at comp.chem.msu.su
Wed Sep 28 03:32:52 PDT 2005


On Mon, Sep 26, 2005 at 12:54:33AM +0200, Bernd Walter wrote:
> On Sun, Sep 25, 2005 at 11:08:25PM +0100, Gavin Atkinson wrote:
> > 
> > Also, you can't set both the vlan and IP address information:
> > leeloo# ifconfig vlan14 vlan 14 vlandev fxp0 inet W.X.Y.Z netmask 255.255.255.0
> > ifconfig: inet: bad value
> > 
> > As a result of this, the only way to create vlans from rc.conf seems to
> > be in two stages, by renaming the interface:
> > 
> > cloned_interfaces="vlan14"
> > ifconfig_vlan14="vlan 14 vlandev fxp0 name somename"
> > ifconfig_somename="inet W.X.Y.Z netmask 255.255.255.0"
> 
> The follwing always worked for me, no need to rename:
> cloned_interfaces="vlan1"
> ifconfig_vlan1="inet 1.2.3.4/29 vlan 1 vlandev fxp0"

Indeed, the address assignment arguments should precede other
parameters to ifconfig(8).  I think this is evident from the syntax
shown on the manpage.

> What doesn't work is this:
> ifconfig_vlan1_alias0="1.2.3.4/32"
> I had to configure them by a selfdone script.

Adding aliases on vlanX this way has been working for me.  Could
you check if prepending the "inet" keyword before the address changes
anything?  I prefer to specify address family explicitly in my
rc.conf files.  E.g.:

	ifconfig_vlan1_alias0="inet 1.2.3.4/32"

-- 
Yar


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