Date: Fri, 2 Dec 2005 10:16:05 +0200 From: Ruslan Ermilov <ru@freebsd.org> To: Mark Jayson Alvarez <jay2xra@yahoo.com> Cc: freebsd-net@freebsd.org Subject: Re: how to set a route to an AF_LINK type Message-ID: <20051202081605.GR20961@ip.net.ua> In-Reply-To: <20051202072719.76687.qmail@web51604.mail.yahoo.com> References: <20051202072719.76687.qmail@web51604.mail.yahoo.com>
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[-- Attachment #1 --] On Thu, Dec 01, 2005 at 11:27:19PM -0800, Mark Jayson Alvarez wrote: > > Hi, > > I'm not sure what I did wrong. My carp setup with 2 machines sharing 1 > virtual ip is working perfect for 3 days now, until today, I got these > messages in /var/log/messages > > kernel: carp: incorrect hash > arp_rtrequest:bad gateway 10.10.8.146 (!AF_LINK) > > googling brought me to this link: > > http://lists.freebsd.org/pipermail/freebsd-net/2004-January/002608.html > > However, It doesn't show how to resolve the problem. After rebooting > the machine, it still doesn't work (when it is supposed to) > Netstat -rn gives me: > > default 10.10.8.254 UGS 0 1074 xl0 > 10.10.8/24 link#1 UC 0 0 xl0 > 10.10.8.112 00:0e:a6:c9:ac:19 UHLW 1 46 xl0 > 1186 > 10.10.8.254 00:01:02:9a:7f:c3 UHLW 2 1 xl0 > 827 > 127.0.0.1 127.0.0.1 UH 0 0 lo0 > > > Is the route type (AF_LINK) configurable? where? How will I know if it is an AF_LINK type? > Rebooting doesn't fix the corrupted routing table either. > Any idea how to eliminate the problem? > It's the gateway's address family that is AF_LINK, not a "route type". For example, routes for 10.10.8.112 and 10.10.8.254 have gateways of type AF_LINK (Ethenet addresses). I don't know about this specific problem, but adding a route with AF_LINK gateway can be done using a route(8) command, for example: # route add -host 1.2.3.4 -link :0.1.2.3.4.5 -ifp lo0 Which doesn't make any sense, and is presented only to demonstrate the ability to add AF_LINK gateway. The following command adds an "ARP route" through em0 which doesn't have a corresponding network, and is otherwise not possible to do with the arp(8) command: # route add -host 1.2.3.4 -link :0.1.2.3.4.5 -ifp em0 -iface add host 1.2.3.4: gateway :0.1.2.3.4.5 # arp -n 1.2.3.4 ? (1.2.3.4) at 00:01:02:03:04:05 on em0 permanent [ethernet] Cheers, -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDkALFqRfpzJluFF4RAolDAKCFoTk/Ic22HRyHkkh+G1TGwqGpLwCeNZU8 aOSpTL+347I/O4XcuJRJME0= =UXi4 -----END PGP SIGNATURE-----
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