localhost doesn't need a route to it in linux. The device lo is 127.0.0.1, but the netmask is 255.0.0.0, and the device responds to 127.*.*.*
horse:/tmp/cs/hsw4# ping 127.123.45.67 -c 1 PING 127.123.45.67 (127.123.45.67): 56 data bytes 64 bytes from 127.123.45.67: icmp_seq=0 ttl=64 time=0.2 ms ... -----Original Message----- From: Steve Holdoway [mailto:[EMAIL PROTECTED] Sent: Wednesday, 6 April 2005 5:13 p.m. To: [email protected] Subject: Re: Debian Newbie - network Q 'hard' Nick Rout wrote: >On Wed, 06 Apr 2005 15:24:40 +1200 >Richard Tindall wrote: > > > >>Thanks for the pointers Nick. I'll keep exploring and report back any >>success. >> >> > >further: i realised where i could find a working debian box to ssh into >and report that my wireless debian access point at home does not have a >route for 127.0.0.0, but all other networking still works. therefore >this appears to be a red herring. > >same situation with horse (shell.clug.org.nz) > >however both boxes have the destination entry in the 192.168 part of >the routing table ending in a 0 - ie the network address. > >Take a good hard look at /etc/network/interfaces - posting a copy might >be a good idea. > > > > > This is from my mail server... debian sarge - not too up to date. About as simple as you can get. As for firewalls, just switch them off until you know things work! Steve mail:/etc/network# uname -a Linux mail.greengecko.co.nz 2.6.8.1 #1 Fri Aug 20 00:13:09 NZST 2004 i686 GNU/Linux mail:~# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 10.0.0.138 0.0.0.0 UG 0 0 0 eth0 mail:~# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:02:44:66:FD:20 inet addr:10.0.0.5 Bcast:10.255.255.255 Mask:255.255.255.0 inet6 addr: fe80::202:44ff:fe66:fd20/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4114647 errors:0 dropped:0 overruns:0 frame:0 TX packets:3120608 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1844641144 (1.7 GiB) TX bytes:1702035131 (1.5 GiB) Interrupt:17 Base address:0xdc00 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:300607 errors:0 dropped:0 overruns:0 frame:0 TX packets:300607 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:267698626 (255.2 MiB) TX bytes:267698626 (255.2 MiB) 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) mail:/etc/network# cat interfaces # /etc/network/interfaces -- configuration file for ifup(8), ifdown(8) # The loopback interface auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 10.0.0.5 netmask 255.255.255.0 gateway 10.0.0.138 mail:/etc/network# lspci | grep Eth 0000:00:08.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) mail:/etc/network# lsmod | grep 8139 ( interesting - I wonder which one's in use! ) 8139cp 19072 0 8139too 23808 0 mii 4992 2 8139cp,8139too crc32 4608 2 8139cp,8139too
