Subject: DHCP and RoadRunner Cable Modem
To: NetBSD i386 <port-i386@netbsd.org>
From: Analysis and Solutions <info@analysisandsolutions.com>
List: port-i386
Date: 06/28/2001 01:43:23
Hi Folks:
Just installed NetBSD 1.5 (in a dual boot situation with Windows 95 and
Windows NT 4.0). Glad to be here. Unfortunately, I can't get a connecion to
the internet. The link is via a RoadRunner cable modem using DHCP. The
modem is hooked to my machine via a 10 Base T Netgear FA 312 network adapter
card.
I've read the man pages for the various programs involved, scoured the
newsgroups/mailing list archives and looked at a series of web pages with
tips. None have gotten me over the top. Your advice will be greatly
appreciated.
Here's the behavior...
I boot up at the start of the day into NetBSD
DHCP gets a lease okay.
Can ping my inet number okay.
Can ping a server by IP address.
Can't ping a server by domain name. The error message says:
Can not resolve "shell.panix.com" (Host name lookup failure)
Shutdown
Boot into NetBSD
Obtains DHCP lease
Can't ping a server by IP address.
Shutdown
Remove power from cable modem
Restore power to cable modem
Boot into NetBSD
Can ping a server by IP address.
Can't ping a server by domain name. The error message says:
Can not resolve "shell.panix.com" (Host name lookup failure)
Shutdown
Boot into Windows NT 4
DHCP can't get lease
Shutdown
Remove power from cable modem
Restore power to cable modem
Boot into Window NT 4
DHCP gets lease okay
Everything runs fine
One thing I notice off the bat is the MAC/NAT number shown during bootup and
in the ifconfig output, 0a:67:c9:c3:98:a8, does not match the MAC/NAT of my
card or my cable modem. Where's this number coming from? Could this be the
problem?
As far as the NetBSD configuraion, I've tried all sorts of different setups.
I get the same results every time. Below you'll find all sorts of relevant
files and outputs.
I've spent nearly two days tinkering with this. Do you have any ideas,
please?
Thanks,
--Dan
==================== /etc/rc.conf ========================
# I just recently put this in. Makes no difference either way.
ifconfig_sip0="inet base.nyc.rr.com netmask 255.255.255.0"
clear_tmp=YES
ipfilter=NO
inetd=YES
dhclient_flags="sip0"
dhclient=YES
==============================================================
================ /etc/dhclient.conf ======================
# NOTE:
# This is my latest file.
# I've tried lots of different configurations,
# including a completely blank file.
# Behavior is the same, regardless.
reboot 0;
interface "sip0" {
send dhcp-client-identifier 1:00:A0:CC:A1:86:27;
send host-name "base";
media "link2";
}
==============================================================
=============== /var/db/dhclient.leases ================
lease {
interface "sip0";
fixed-address 66.65.114.128;
medium "link2";
option subnet-mask 255.255.255.0;
option routers 66.65.114.1;
option dhcp-lease-time 86400;
option dhcp-message-type 5;
option domain-name-servers 24.29.99.36,24.29.99.38,24.29.99.39;
option dhcp-server-identifier 24.29.99.65;
option broadcast-address 255.255.255.255;
option domain-name "nyc.rr.com";
renew 3 2001/6/27 22:37:47;
rebind 4 2001/6/28 07:37:58;
expire 4 2001/6/28 10:37:58;
}
==============================================================
================ ifconfig -a -u =========================
sip0: flags=fbff<UP,BROADCAST,DEBUG,LOOPBACK,POINTOPOINT,NOTRAILERS,
RUNNING,NOARP,PROMISC,ALLMULTI,SIMPLEX,LINK0,LINK1,LINK2,MULTICAST>
mtu 1500
address: 0a:67:c9:c3:98:a8
media: Ethernet autoselect (10baseT)
status: active
inet 66.65.114.128 -> 255.255.255.255 netmask 0xffffff00
broadcast 255.255.255.255
inet6 fe80::867:c9ff:fec3:98a8%sip0 ->
:: prefixlen 64 scopeid 0x1
inet6 ::1 -> ::1 prefixlen 128
lo0: flags=8009<UP,LOOPBACK,MULTICAST> mtu 33228
inet 127.0.0.1 netmask 0xff000000
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
inet6 ::1 prefixlen 128
==============================================================
============ /etc/resolv.conf ============================
search nyc.rr.com
nameserver 24.29.99.36
nameserver 24.29.99.38
nameserver 24.29.99.39
==============================================================
========= Windows NT IP Configuration ===================
F:\>ipconfig
Ethernet adapter FA312ND45:
IP Address. . . . . . . . . : 66.65.114.128
Subnet Mask . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . : 66.65.114.1
==============================================================
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