Date: Sun, 7 Mar 2004 09:48:58 +0300 (MSK) From: "."@babolo.ru To: Jerry Jensen <youknicks@yahoo.com> Cc: freebsd-net@freebsd.org Subject: Re: multiple logical interfaces Message-ID: <1078642138.728121.16568.nullmailer@cicuta.babolo.ru> In-Reply-To: <20040307060634.65073.qmail@web41802.mail.yahoo.com>
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> Actually, what I want is the equivalent of this (which
> is in Linux) on FreeBSD. Note the ip address
> associated with each of the logical interfaces
> (lo:XX).
And what?
0cicuta~(11)#ifconfig lo0
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x7
inet 127.0.0.1 netmask 0xffffff00
0cicuta~(12)#ifconfig lo1
lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet 127.0.1.1 netmask 0xffffff00
inet 127.0.1.2 netmask 0xffffffff
0cicuta~(13)#ifconfig lo2
lo2: flags=8008<LOOPBACK,MULTICAST> mtu 16384
0cicuta~(14)#ifconfig lo3
lo3: flags=8008<LOOPBACK,MULTICAST> mtu 16384
0cicuta~(15)#ifconfig lo3 192.168.0.1/24
0cicuta~(16)#ifconfig lo3
lo3: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet 192.168.0.1 netmask 0xffffff00
The only disadvantage in
0cicuta~(17)#uname -a
FreeBSD cicuta.babolo.ru 4.9-RC FreeBSD 4.9-RC #0: Fri Oct 10 11:37:45 MSD 2003 babolo@cicuta.babolo.ru:/tmp/babolo/usr/src/sys/cicuta i386
is that lo can't be created dynamically.
One more quection: why not alias the lo0 ?
> eth0 Link encap:Ethernet HWaddr
> 00:06:5B:19:55:EE
> inet addr:10.2.1.122 Bcast:10.255.255.255
> Mask:255.0.0.0
> UP BROADCAST RUNNING MULTICAST MTU:1500
> Metric:1
> RX packets:5903525 errors:0 dropped:0
> overruns:0 frame:0
> TX packets:5337692 errors:0 dropped:0
> overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> Interrupt:16 Base address:0xecc0
> Memory:fe2ff000-fe2ff038
>
> eth1 Link encap:Ethernet HWaddr
> 00:06:5B:19:55:EF
> inet addr:192.168.6.122 Bcast:192.168.6.255
> Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500
> Metric:1
> RX packets:1818518022 errors:2 dropped:0
> overruns:263 frame:2
> TX packets:1182175968 errors:0 dropped:0
> overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> Interrupt:17 Base address:0xec80
> Memory:fe2fe000-fe2fe038
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:199 errors:0 dropped:0 overruns:0
> frame:0
> TX packets:199 errors:0 dropped:0 overruns:0
> carrier:0
> collisions:0 txqueuelen:0
>
> lo:10 Link encap:Local Loopback
> inet addr:202.175.33.10
> Mask:255.255.255.255
> UP LOOPBACK RUNNING MTU:16436 Metric:1
>
> lo:11 Link encap:Local Loopback
> inet addr:193.65.100.99
> Mask:255.255.255.255
> UP LOOPBACK RUNNING MTU:16436 Metric:1
>
> lo:12 Link encap:Local Loopback
> inet addr:193.65.100.100
> Mask:255.255.255.255
> UP LOOPBACK RUNNING MTU:16436 Metric:1
>
> lo:13 Link encap:Local Loopback
> inet addr:210.183.28.42
> Mask:255.255.255.255
> UP LOOPBACK RUNNING MTU:16436 Metric:1
>
> --- .@babolo.ru wrote:
> > > is it possible in freebsd to have multiple logical
> > > interfaces associated with say the loopback
> > interface?
> > > if so, how does one do this programmatically (as
> > > opposed to from the command line).
> > >
> > > need this for building traffic generators that
> > need to
> > > simulate a bunch of different ip sources. solaris
> > > allows it as does linux i believe.
> > > thx.
> > Is it what you want?
> >
> > > ifconfig -a | grep lo
> > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu
> > 16384
> > inet6 fe80::1%lo0 prefixlen 64 scopeid 0xa
> > lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu
> > 16384
> > lo2: flags=8008<LOOPBACK,MULTICAST> mtu 16384
> > lo3: flags=8008<LOOPBACK,MULTICAST> mtu 16384
> >
> > If it is, there is from kernel config:
> >
> > > grep loop /sys/i386/conf/garkin
> > pseudo-device loop 4 # Network loopback
> >
> > _______________________________________________
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> >
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>
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