Date: Sat, 8 Nov 1997 17:11:41 -0600 From: Zach Heilig <zach@gaffaneys.com> To: questions@freebsd.org Subject: Arg! networking problem driving me nuts Message-ID: <19971108171141.36463@gaffaneys.com>
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Ok, I am stumped. I have two machines on either end of a lap-link parallel
cable. One I will call stable (running 2.2.5-stable) and one I will call
current (running 3.0-971022-SNAP).
What must I do to make packets flow from 'stable' to 'current' (they do
flow in the other direction). I am sure there is something I am missing,
but I haven't a clue what.
stable (10.0.0.1) has the lap-link cable on lp1:
lpt1 at 0x278-0x27f irq 5 on isa
lpt1: Interrupt-driven port
lp1: TCP/IP capable interface
current (10.0.0.2) has the other end of the cable on lp0:
lpt0: at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
stable$ netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 208.155.161.51 UGSc 5 0 tun0
10/24 lp1 USc 1 0 lp1
10.0.0.1 127.0.0.1 UGHS 0 0 lo0
127.0.0.1 127.0.0.1 UH 2 209 lo0
208.155.161.51 208.155.161.55 UH 6 0 tun0
current$ netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 10.0.0.1 UGSc 0 0 lp0
10/24 lp0 USc 1 0 lp0
10.0.0.2 127.0.0.1 UGHS 0 168 lo0
127.0.0.1 127.0.0.1 UH 1 0 lo0
current$ telnet stable
Trying 10.0.0.1...
[hangs], but on the other machine, I see:
stable$ netstat -n
Active Internet connections
Proto Recv-Q Send-Q Local Address Foreign Address (state)
tcp 0 0 10.0.0.1.23 10.0.0.2.1029 SYN_RCVD
udp 0 0 127.0.0.1.53 *.*
udp 0 0 208.155.161.21.53 *.*
udp 0 0 10.0.0.1.53 *.*
stable$ ifconfig lp1
lp1: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.0.1 --> 10.0.0.2 netmask 0xffffff00
stable$ route get 10.0.0.2
route to: current
destination: current
interface: lp1
flags: <UP,HOST,DONE,WASCLONED,PROTO3>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
16384 16384 0 0 0 0 1500 3527
current$ ifconfig lp0
lp0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.0.2 --> 10.0.0.1 netmask 0xffffff00
current$ route get 10.0.0.1
route to: stable
destination: stable
interface: lp0
flags: <UP,HOST,DONE,WASCLONED>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
0 0 0 0 0 0 1500 0
This setup works when I run with msdos and use the appropriate drivers.
--
Zach Heilig
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