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DragonFlyBSD not in compliance with RFC 1122

From: Gary Allan <dragonfly@xxxxxxxxxxxxxxx>
Date: Wed, 16 Mar 2005 19:34:07 +0000


I ran into a problem today. I administer a machine that needs to sit on two separate networks and The network card is configured as:

        inet netmask 0xffffff00 broadcast
        inet netmask 0xffffff00 broadcast
        ether 00:10:5a:f7:6e:71
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active

The machine has a default route of
(Public IP addresses replaced with private.)

All is well except that is inaccessible from the Internet. A quick RTFM reveals that I need to add a second default gateway but it appears that this is not supported under FreeBSD 4 or DragonFly.


RFC1122 INTERNET LAYER October 1989

            ... the IP layer MUST pick a gateway from its list of
            "default" gateways.  The IP layer MUST support multiple
            default gateways.

I've resolved this by using IPFW to forward the necessary traffic from to the router but feel this is a bit of a bodge. I've noticed recent routing code commits so I'm hoping this is a good time to ask if DragonFly is planning to support multiple default gateways (RFC 1122)? Supporting the use of Zebra can't be a bad thing.



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