Date: Sat, 6 Mar 2004 22:06:34 -0800 (PST) From: Jerry Jensen <youknicks@yahoo.com> To: "."@babolo.ru Cc: freebsd-net@freebsd.org Subject: Re: multiple logical interfaces Message-ID: <20040307060634.65073.qmail@web41802.mail.yahoo.com> In-Reply-To: <1078631320.114327.16335.nullmailer@cicuta.babolo.ru>
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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).
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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