Re: DOSEMU does not pick up all packets

[Stian Sletner <stian@sletner.com>]

* At 2002-11-29T23:27+0300, Stas Sergeev wrote:
: 
| >I thought I had a clever idea, ifconfig'd up a virtual interface eth0:0
| >and set $_netdev = "eth0:0", but that made dosemu crash so it probably
| How exactly the crash looks like?

stian:~$ nice -20 dos -D+P -o dos.debug >dos.out 2>&1

dos.debug:

debug flags: -a
debug flags: +P
========Sending packet======
packet to send: :
 Dest.=ff:ff:ff:ff:ff:ff: Source=0:40:95:0:3c:31: Type= 3781 
PD ERR:  AX=0481 BX=03bc CX=003c DX=0c08 FLAGS=00033017
      SI=163c DI=164a BP=ff7c SP=ff6e CS=f000 DS=0f90 ES=0f90 SS=17f1
SIGILL while in vm86()
ERROR: unexpected CPU exception 0x06 err=0x00000000 cr2=00000000 while in vm86 (DOS)


leavedos(4|0x4) called - shutting down

dos.out:

Linux kernel 2.4.18; CPU speed is 300676000 Hz
Dosemu-1.1.3.7 Running on CPU=586, FPU=1
^[[?25h^[[0m^[[H^[[2JERROR: unexpected CPU exception 0x06 err=0x00000000 cr2=00000000 while in vm86 (DOS)
Program=sigsegv.c, Line=162
EIP: 8b2e:00003669 ESP: 17f1:0000ff70  VFLAGS(b): 00000 00110000 00000110
EAX: 00007ff9 EBX: 0000000e ECX: 0000003d EDX: 00000733 VFLAGS(h): 00003006
ESI: 0000163c EDI: 0000164a EBP: 0000ff7c DS: 0f90 ES: 0f90 FS: 0000 GS: 0000
FLAGS: PF IF RF VM  IOPL: 3
STACK: 35 02 e6 19 00 b8 92 ff 15 07 -> 13 00 27 13 08 16 90 0f 82 03 
OPS  : 00 00 00 00 00 40 6a 13 33 01 -> ff ff ff ff ff ff 02 00 00 00 
	ffff                8b2e:3669 ???     di

| >I'm having problems compiling the dosnet module in RH8.
| It was already reported that there
| are problems compiling dosnet under
| RH8. The fix is to get the fresh
| kernel sources and make a proper
| symlinks for /usr/include/linux and
| /usr/include/asm

Ah.

| Why are you limited with bridging between only 2 interfaces?

Well, it only listens on one interface, and packs up the packets in IP
and sends them off in UDP through normal networking means.  And listens
for UDP (IPADDR_ANY) and unpacks and puts them out on the interface.

What I'm currently using is "SIB", btw.  (It's on freshmeat somewhere if
you want to look.)

-- 
Stian Sletner