From owner-freebsd-questions  Sat Mar 24 14:42:58 2001
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Subject: moving from DHCP to static IP
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Hi,

My FreeBSD box is behind a nat box which acts as a DHCP server.  DHCP has
been working great so far, but I'd like to allow ssh connections through
the firewall to my machine, so I need to move to a static IP address.
The thing is, I can't really find any help on doing this in the handbook
or anywhere else.

I've figured out (by reading rc.network) that I need to replace
ifconfig_xl0="DHCP"
with
ifconfig_xl0="{ifconfig args}"

in rc.conf, but as for what those args I'm not sure where to start.  The
man page for ifconfig wasn't all that helpful.

Here's some info

%] ifconfig -a
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet6 fe80::250:4ff:fed9:a981%xl0 prefixlen 64 scopeid 0x1
        inet 192.168.1.100 netmask 0xffffff00 broadcast 192.168.1.255
        ether 00:50:04:d9:a9:81
        media: autoselect (10baseT/UTP) status: active
        supported media: autoselect 100baseTX <full-duplex> 100baseTX
10baseT/UTP <full-duplex> 10baseT/UTP 100baseTX <hw-loopback>
sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552
faith0: flags=8000<MULTICAST> mtu 1500
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif1: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif2: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif3: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x8
        inet6 ::1 prefixlen 128
        inet 127.0.0.1 netmask 0xff000000
ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500

Now, for the panicky, overwhelmed-sounding questions:
How much of the info for xl0 needs to be specified in rc.conf?  How do I
translate a 192.168.1.* address to IPv6?  Do I need to?

Also, why do I have so many interfaces listed?  Should I disable any?  Are
there any security risks?

Thanks much
Mark



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