[altq 1568] Re: DiffServ over IPv6 with ALTQ: 2 questions

[Kenjiro Cho <kjc@csl.sony.co.jp>]

Mercedes Herrera wrote:
>     I am using ALTQ over KAME to test DiffServ over IPv6 networks.
>     I would like to confirm to points in ALTQ behaviour:
> 
> First, IPv6 packets with extension headers are not correct filtered. I
> sent packets too big, that were fragmented, and the filter did not
> recognize any packet. The filter was over IPv6 destination address +
> port + protocol. Is it only a problem with the protocol (that it is
> codified in "next header")? Does it work if I configure the filter with
> only destination address + port (although not exact)?

ALTQ doesn't handle IPv6 fragments.  Fragments are discouraged in the
IPv6 design...

> Second, I read in ALTQ Tips that "ALTQ no longer supports meter/tagger
> at an output interface" so when you say that in egress diffedge ALTQ can
> do meter/marker, is it only in input interfaces? So is it not possible
> to mark traffic generated in the FreeBSD maquine with a DSCP value?

Correct.  Diffserv traffic conditioners are only for input interfaces.

-Kenjiro