Re: IPFW2 versrcreach update

From: Gleb Smirnoff (glebius_at_freebsd.org)
Date: 07/20/04

  • Next message: Andre Oppermann: "Re: IPFW2 versrcreach update" 
    Date: Tue, 20 Jul 2004 11:17:59 +0400
To: James <haesu@towardex.com>

    On Mon, Jul 19, 2004 at 10:12:38PM -0400, James wrote:
    J> /* if no ifp provided, check if rtentry is not default route */
    J> if (ifp == NULL &&
    J> satosin(rt_key(ro.ro_rt))->sin_addr.s_addr == INADDR_ANY) {
    J> RTFREE(ro.ro_rt);
    J> return 0;
    J> }
    J>
    J> + /* by this point a route is found. check if this is pointed
    J> + * to blackhole/reject */
    J> + if (ifp == NULL && ro.ro_rt->rt_flags & (RTF_REJECT|RTF_BLACKHOLE) ) {
    J> + RTFREE(ro.ro_rt);
    J> + return 0;
    J> + }
    J>
    J>
    J> Haven't tested this yet, but will do tomorrow after I finish some other stuff
    J> I need done before rebooting w/ a test kernel.
    J> Anyway the idea is to fail the check if the route has RTF_REJECT or
    J> RTF_BLACKHOLE flag, under loose-check (ifp set to NULL) operation, which is
    J> an easy straight forward change.

    Seems reasonable from my viewpoint.

    P.S. GNU zebra null-routes into lo0, always setting RTF_BLACKHOLE flag. What
    software uses RTF_REJECT flag? 

    -- 
Totus tuus, Glebius.
GLEBIUS-RIPN GLEB-RIPE
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  • Next message: Andre Oppermann: "Re: IPFW2 versrcreach update"

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