Messages in this thread |  | | Date | Fri, 21 Jun 1996 16:41:31 -0500 (CDT) | From | "James L. McGill" <> | Subject | Class B, Name lookups? BUG? |
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Hello. If this is a network code bug, it is of interest to kernel hackers. If not, I do apolgize.
We are now on a Class B network, and reach the internet through a firewall proxy.
Before, when we were on a Class C, everything worked ok. Now, Name lookups will not work. Name lookups with nslookup are ok, but applications are broken.
Example:
IPADDR="10.2.3.13" NETMASK="255.255.0.0" NETWORK="10.2.0.0" BROADCAST="10.2.255.255" GATEWAY="10.2.1.254"
# ifconfig eth0 Link encap:10Mbps Ethernet HWaddr 00:00:B4:72:FC:64 inet addr:10.2.3.13 Bcast:10.2.255.255 Mask:255.255.0.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:198277 errors:0 dropped:0 overruns:0 TX packets:73503 errors:0 dropped:0 overruns:0 Interrupt:15 Base address:0x340
# netstat -rn Kernel routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.2.3.0 0.0.0.0 255.255.255.0 U 0 0 5 eth0 10.2.0.0 0.0.0.0 255.255.0.0 U 0 0 6 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 6 lo 0.0.0.0 10.2.1.254 0.0.0.0 UG 1 0 15 eth0
# nslookup ftp.uu.net Server: bilbo.pic.net Address: 204.58.152.2
Non-authoritative answer: Name: ftp.uu.net Address: 192.48.96.9
- -HOWEVER- if I try to use any client to go to a site by hostname, it fails. This behaviour is limited to the Linux machines. The Sun (solaris), Macs, Windows, and Win95 do not have this problem. Note that as long as I use IP addresses, everything works. Note also, that my nameservers and our general TCP/IP situation are working just fine.
I believe that it's a bug, but I hope I've made a mistake. But the fact is, this works on the Sparcs and the Mac's and the Windows's. I wonder if there really is anyone else using a Class B with their router masked on a C. To repeat, my problem is not routing or connectivity, my problem is that Linux will not resolv names in this configuration, while the other systems do. Tested on several different boxes.
- -- g-r-a-t-e-f-u-l-l-y---[ email:<fishbowl@conservatory.com> ]---l-i-v-i-n-g d-e-a-d-i-c-a-t-e-d---[ http://www.conservatory.com/~fishbowl ]-----l-i-g-h-t "Whatever the missing mass of the universe is, I hope it's not cockroaches!"
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