Date: Wed, 8 Sep 2004 06:30:31 GMT From: Ruslan Ermilov <ru@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/71474: route lookup does not skip interfaces marked down Message-ID: <200409080630.i886UVfb024840@freefall.freebsd.org>
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The following reply was made to PR kern/71474; it has been noted by GNATS. From: Ruslan Ermilov <ru@FreeBSD.org> To: Thomas Quinot <thomas@cuivre.fr.eu.org> Cc: bug-followup@FreeBSD.org Subject: Re: kern/71474: route lookup does not skip interfaces marked down Date: Wed, 8 Sep 2004 09:24:51 +0300 --Ns7jmDPpOpCD+GE/ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Sep 07, 2004 at 08:44:24PM +0200, Thomas Quinot wrote: >=20 > This issue can be demonstrated using gif interfaces: >=20 > # ifconfig gif0 create > # ifconfig gif0 192.168.0.254 192.168.0.1 > # ifconfig gif0 down > # ifconfig gif1 create > # ifconfig gif1 192.168.0.253 192.168.0.1 >=20 > Note at this point that 192.168.0.1 is reachable through interface > gif1. >=20 > # route add 192.168.1.0 192.168.0.1 > # netstat -rn | grep 192.168 > 192.168.0.1 192.168.0.253 UH 1 0 gif1 > 192.168.1 192.168.0.1 UGS 0 0 gif0 >=20 > Note then that, even though 192.168.0.1 is marked as reachable through > gif1, for the purpose of routing to 192.168.1.0 the selected interface > is gif0 (which is down). >=20 > Fix not determined yet. This problem can be worked around by > changing the addresses on the down interface so it won't clash > with those of the up one: >=20 > # ifconfig gif0 192.168.99.1 192.168.99.2 > # ifconfig gif0 down > # route delete 192.168.1.0 192.168.0.1 > # route add 192.168.1.0 192.168.0.1 > # netstat -rn | grep 192.168 > 192.168.0.1 192.168.0.253 UH 1 0 gif1 > 192.168.1 192.168.0.1 UGS 0 0 gif1 >=20 Just tell it the interface you really want: route add -net 192.168.1 -iface gif1 Cheers, --=20 Ruslan Ermilov ru@FreeBSD.org FreeBSD committer --Ns7jmDPpOpCD+GE/ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBPqWzqRfpzJluFF4RAiCTAJ0eXR3W+/fByp/PJJYkmUAOyzss3wCZAabP MZC2/HN4y8E4I5Ntz+KdMt0= =Amdw -----END PGP SIGNATURE----- --Ns7jmDPpOpCD+GE/--
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