Date: Fri, 27 Aug 2004 09:30:17 -0400 From: Bob Ababurko <ababurko@adelphia.net> To: ecrist@secure-computing.net Cc: questions@freebsd.org Subject: Re: cannot get rc.conf to configure an second interface Message-ID: <5.2.1.1.0.20040827091804.01c8af40@mail.dc2.adelphia.net> In-Reply-To: <412E5C4B.3040205@secure-computing.net> References: <5.2.1.1.0.20040824183938.01a70a08@mail.dc2.adelphia.net> <5.2.1.1.0.20040824183938.01a70a08@mail.dc2.adelphia.net>
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At 04:55 PM 8/26/2004 -0500, you wrote: >Bob Ababurko wrote: > >>Hello- >> I am trying to configure rc.conf to set up my second interface. Right >> now, I have these lines in the rc.conf file and when I boot the mahine, >> fxp1 is not configured. Also, it seems that that ipv6 is set up an I am >> not sure how to disable it. Here is my rc.conf entries that refer to >> the network: >>ifconfig_fxp0="inet 192.168.102.14 netmask 255.255.255.0" >>ifconfig_fxp1="inet 192.168.102.15 netmask 255.255.255.0" >>defaultrouter="192.168.102.1" >> IS there thing else that I need to do to configure fxp1 to survive a >> reboot? One thing that happens when I configure the NIC with ifconfig is this: >>bash-2.05b# ifconfig fxp1 192.168.102.15 netmask 255.255.255.0 >>ifconfig: ioctl (SIOCAIFADDR): File exists >>what I end up needing to do is configure the IP and then the network, >>separately. I think that this error has something to do with my problem, >>but I am not sure how to deal with that. Any info that anyone ca lead me >>to will be great. >>thanks, >>Bob > >If I've been learning anything lately, you cannot have two interfaces >configured on the same subnet on FreeBSD. The boot process is erroring >out on this, hence why you're getting the ifconfig error listed above. One >way to get around this is set those interfaces with a netmask of all ones, >or 255.255.255.255, or simply do have these entries in you're rc.conf file: > >ifconfig_fxp0="inet 192.168.102.14/32" >ifconfig_fxp1="inet 192.168.102.15/32" >defaultrouter="192.168.102.1" > >Again, this is if I got everything correctly. > >HTH > >Eric F Crist > I am curious as to how these netmask settings will effect the way my routes will be handled. If I use a /32, what does that mean....or more specifically, what is going on here? I am sure this is not the conventions used in Solaris. So, I would like to understand what is going on or why I would use a different subnet mask. Also.....what I want to do here, or at least, think that I want to do, is have traffic come and go out of each NIC, respectively. I don't want traffic to come in fxp1 and go out of fxp0. I want this to occur because I am going to use dummynet to handle some bandwidth issues. What is the default behavior in this respect in FreeBSD when just adding another NIC to a system and not making any other changes? Do I have to change anything in my routing tables? I am thinking that I do.....If someone with expertise in these areas can help, I would be grateful! thx, BoB
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