Re: ipv6_addrs_IF aliases in rc.conf(5)

On Thu, Dec 20, 2012 at 3:27 PM, Jilles Tjoelker <jilles_at_stack.nl> wrote:
> On Thu, Dec 20, 2012 at 01:04:34PM +0200, Kimmo Paasiala wrote:
>> A question related to this for those who have been doing work on the
>> rc(8) scripts. Can I assume that /usr/bin is available when
>> network.subr functions are used? Doing calculations on hexadecimal
>> numbers is going to be very awkward if I can't use for example bc(1).
>
> You cannot assume that /usr/bin is available when setting up the
> network. It may be that /usr is mounted via NFS.
>
> You can use hexadecimal numbers (prefixed with 0x) in $((...))
> expressions. In FreeBSD 9.0 or newer, sh has a printf builtin you can
> use; in older versions you can use hexdigit and hexprint from
> network.subr.
>
> --
> Jilles Tjoelker

Thanks, I've rewitten my patch to support ranges. It is attached in
this message.

Again it's against a very recent 9-STABLE, I still haven't found time
to see if it applies to CURRENT.

It does allow you to do crazy stuff like

ipv6_addrs_re0="2001:db8:1111:2222::1-ffff/64"

However I didn't find anything to limit the number of aliases in the
ipv4 version of the function either.

Please test it :)


Then a question about the PR
(http://www.freebsd.org/cgi/query-pr.cgi?pr=174225) I wrote, how can I
attach this new patch to it? The submit follow up -button fires up my
email client and I'm not so sure how to submit a new patch for the PR
in an email in such a way that it appears properly formatted in the
PR.

Regards,

Kimmo Paasiala