From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Wilson-Lindberg Subject: Re: Multiple interfaces with the same IP address Date: Wed, 7 Oct 2009 14:57:45 -0700 Message-ID: <4ACD0ED9.10601@spacex.com> References: <4ACCEDDA.9020508@spacex.net> <4ACCF3F0.5040703@hp.com> <4ACCFF8F.1010000@spacex.net> <4ACD04EA.5040303@hp.com> <33be4bb30910071421s3410e8e4jdadedbc216de958a@mail.gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <33be4bb30910071421s3410e8e4jdadedbc216de958a@mail.gmail.com> Sender: netfilter-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: "netfilter@vger.kernel.org" Ok, I can use route to add the various IP addresses that are on each HDLC channel to the routing tables. There are a lot of machines, but because the addresses are well known/formatted, generating the scripts automatically won't be to bad. But how do I handle broadcast addresses such as 172.16.255.255, 172.16.128.255, or 172.16.129.15 that need to go out all of the HDLC channels? Oskar Berggren wrote: > 2009/10/7 Rick Jones : >> Greg Wilson-Lindberg wrote: >>> Rick Jones wrote: >>> ... >>> > >> I have not fully parsed the manpage for the ip command, but it does have >> tidbits which suggest being able to specify interfaces by name when >> manipulating routing tables. If that is correct you should be able to add >> specific host routes pointing-out specific interface names if you are indeed >> forced to put assign the same IP address to each of the HCLC interfaces on >> the "gateway." >> > > Yes, > > ip route add x.x.x.x/x dev eth1 > > or similar works fine. > > If you like, you can also use ip addr add x.x.x.x/32 dev eth1 to set > an ip-address without having the kernel automatically install a subnet > route. Then manage the routing tables complete by yourself. > > /Oskar > -- > To unsubscribe from this list: send the line "unsubscribe netfilter" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html