Testing network
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Author:  jmkerdal [ Sat Feb 10, 2024 1:43 am ]
Post subject:  Testing network


I'm trying to test how network work.

I use Debian 11 with QEMU. I see an interesting code here: https://github.com/pandax381/xv6-net
It's OK to compile and starting. But nothing work with TCP.

This is what I have on this computer:
ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:db:97:1c brd ff:ff:ff:ff:ff:ff
altname enp2s1
inet brd scope global dynamic noprefixroute ens33
valid_lft 42862sec preferred_lft 42862sec
inet6 2a01:e0a:2d8:6500:3669:a62a:dc50:cc03/64 scope global temporary dynamic
valid_lft 86147sec preferred_lft 85755sec
inet6 2a01:e0a:2d8:6500:20c:29ff:fedb:971c/64 scope global dynamic mngtmpaddr noprefixroute
valid_lft 86147sec preferred_lft 86147sec
inet6 fe80::20c:29ff:fedb:971c/64 scope link noprefixroute
valid_lft forever preferred_lft forever

I see on QEMU documentation that the default IP is so I try this with XV6:

ifconfig net1 netmask
ifconfig net1 up

And on a another console this:
echo "Hello TCP" > /dev/tcp/

Nothing append. I try another IP it's equal. Can you help me with this?
In another hand if you have a good tutorial/code that's work with Debian/QEMU?

Author:  jmkerdal [ Tue Feb 27, 2024 9:05 am ]
Post subject:  Re: Testing network

After multiple test found: this need a fresh Install to work. And it's fragile!

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