Date: Wed, 17 Apr 2013 11:14:08 +0200 From: Willy Offermans <Willy@Offermans.Rompen.nl> To: Brooks Davis <brooks@freebsd.org> Cc: Willy Offermans <Willy@offermans.rompen.nl>, freebsd-current@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: control of order of inet devices Message-ID: <20130417091408.GG3480@vpn.offrom.nl> In-Reply-To: <20130416154423.GD98205@lor.one-eyed-alien.net> References: <20130416135621.GE3286@vpn.offrom.nl> <20130416154423.GD98205@lor.one-eyed-alien.net>
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Hello Brooks,
On Tue, Apr 16, 2013 at 10:44:23AM -0500, Brooks Davis wrote:
> On Tue, Apr 16, 2013 at 03:56:21PM +0200, Willy Offermans wrote:
> > Dear FreeBSD friends,
> >
> > How can I control the order of the network devices in FreeBSD.
> >
> > For example, the command ifconfig lists the network devices:
> >
> > pcn0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
> > options=80000<LINKSTATE>
> > ether 00:0c:46:ea:2b:32
> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> > media: Ethernet 100baseFX
> > status: no carrier
> > rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> > options=2008<VLAN_MTU,WOL_MAGIC>
> > ether 00:11:6b:99:7c:5a
> > inet XXX.XXX.24.4 netmask 0xffffff80 broadcast 137.226.24.127
> > inet6 fe80::211:6bff:fe99:7c5a%rl0 prefixlen 64 scopeid 0x4
> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> > media: Ethernet autoselect (100baseTX <full-duplex>)
> > status: active
> > nfe0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
> > options=82008<VLAN_MTU,WOL_MAGIC,LINKSTATE>
> > ether 00:1b:fc:df:a1:33
> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> > media: Ethernet autoselect (none)
> > status: no carrier
> > plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500
> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
> > options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
> > inet6 ::1 prefixlen 128
> > inet6 fe80::1%lo0 prefixlen 64 scopeid 0x7
> > inet 127.0.0.1 netmask 0xff000000
> > nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
> > tap0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> > options=80000<LINKSTATE>
> > ether 00:22:19:10:8d:bb
> > inet XXX.XXX.24.19 netmask 0xffffffff broadcast 137.226.24.19
> > inet6 fe80::2bd:83ff:fe68:7200%tap0 prefixlen 64 scopeid 0x8
> > nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
> > media: Ethernet autoselect
> > status: no carrier
> >
> > pcn0 being first. However, I would like tap0 being first and of course
> > without any output ordering trick.
>
> The order is dictated by the order the drivers are probed by the kernel.
> When the devices are created they are added to a linked list. There is
> no practical way to control the order and it has little or no effect.
>
> -- Brooks
This is what I read in some of the articles or handbook as well. Can I
reorder this linked list? Can I control the order by creating the kernel
and reordering the inclusion of the device drivers?
I am aware that the request sounds silly, but I have a third party program
which checks its licence against the first inet device. Since I have added
a new inet controller, the sequence has changed. Of course I ask for a new
licence, but they want to charge me for that and I do not see any reason
for that.
--
Met vriendelijke groeten,
With kind regards,
Mit freundlichen Gruessen,
Willy
*************************************
W.K. Offermans
Home: +31 45 544 49 44
Mobile: +31 681 15 87 68
e-mail: Willy@Offermans.Rompen.nl
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