From a couple of related threads on SLE, I determined
Hi, I recently subscribed to Roadrunner internet through my cable provider. I fed the cable modem into a Linksys router, which I configured according to Eric Raymond's how-to at http://en.tldp.org/HOWTO/Linksys-Blue-Box-Router-HOWTO/. The ethernet card, if I recall correctly, I gave a static IP address. I cloned the cable modem's MAC address in the router, and set eth0's default gateway to the router's address. This worked beautifully, as did my phone modem (which I want for backup) for a couple of days until I made the mistake of powering everything down for a few days while I was out of town. On my return, browsing would hang during host resolution whether I used the cable modem or the phone modem. I eventually undid everything, including my ethernet card configuration, and got back the phone modem. After this, all attempts to repeat my previous cable modem success failed. At best I get a very quick ... not found". I clearly have some DNS issue, but do not see what I can do about it. Oh yeah, and although I understand that connecting with the phone modem is supposed to override the ethernet networking shtuff, I can't use that either. What I have: Linux box running SUSE 8.2, cable modem with 192.168.1.1 as address, router with same IP address (I don't think I can change this, but it also was not a problem before, ethernet card in PC with 192.168.1.2 address. that I could run some diagnostics. I reproduce these below. I have two configurations there (static IP address and DHCP-assigned address for router). I have the SUSE personal firewall on the Linux box. I am not running a server or anything else, so I block all services. Questions: What (if anything) seems to be wrong? What other info could help? What else can I try? Best, due to a tight schedule, would be a quick cookbook procedure for just getting the stupid thing to work until I can actually learn something about networking later.... Thanks for your time! Steve I. Diagnostics w/ static IP for eth0 ---------- % ifdown eth0 % ifup eth0 [no output] % ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0F:B5:47:BC:71 inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20f:b5ff:fe47:bc71/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:17325 errors:0 dropped:0 overruns:0 frame:0 TX packets:16744 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:5427875 (5.1 Mb) TX bytes:1398129 (1.3 Mb) Interrupt:9 Base address:0x9000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:334 errors:0 dropped:0 overruns:0 frame:0 TX packets:334 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:24746 (24.1 Kb) TX bytes:24746 (24.1 Kb) sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet1 Link encap:Ethernet HWaddr 00:50:56:C0:00:01 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:46 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet8 Link encap:Ethernet HWaddr 00:50:56:C0:00:08 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) % route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0 default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 %netstat -nr Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 II. Diagnostics w/ DHCP assigned address for eth0 ---------- % ifdown eth0 % ifup eth0 Starting DHCP Client Daemon on eth0... IP/Netmask: 192.168.1.100 / 255.255.255.0 % ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0F:B5:47:BC:71 inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20f:b5ff:fe47:bc71/64 Scope:Link UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:49 errors:0 dropped:0 overruns:0 frame:0 TX packets:98 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:6196 (6.0 Kb) TX bytes:9724 (9.4 Kb) Interrupt:9 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:10 errors:0 dropped:0 overruns:0 frame:0 TX packets:10 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:652 (652.0 b) TX bytes:652 (652.0 b) sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet1 Link encap:Ethernet HWaddr 00:50:56:C0:00:01 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:46 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet8 Link encap:Ethernet HWaddr 00:50:56:C0:00:08 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) % route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0 default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 %netstat -nr Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs