Sounds like you don't have the DNS server, or maybe gateway, entries
in NetBSD. I can't recall offhand where they go, I think one of the files is
/etc/myagte...

---   David A Woyciesjes
---   C & IS Support Specialist
---   Yale University Press
---   mailto:david.woyciesjes@yale.edu
---   (203) 432-0953
---   ICQ # - 905818


! -----Original Message-----
! From: Analysis and Solutions [mailto:info@analysisandsolutions.com]
! Sent: Thursday, June 28, 2001 1:43 AM
! To: NetBSD i386
! Subject: DHCP and RoadRunner Cable Modem
! 
! 
! 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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