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From: yw662 <1862415@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1862415] Re: -nic user cannot receive TFTP response from outside on windows 10 host
Date: Fri, 07 Feb 2020 19:59:55 -0000	[thread overview]
Message-ID: <158110559565.8770.10768731295664794562.malone@chaenomeles.canonical.com> (raw)
In-Reply-To: 158110549948.8965.4395096108369482087.malonedeb@chaenomeles.canonical.com

** Attachment added: "dump.dat"
   https://bugs.launchpad.net/qemu/+bug/1862415/+attachment/5326375/+files/dump.dat

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https://bugs.launchpad.net/bugs/1862415

Title:
  -nic user cannot receive TFTP response from outside on windows 10 host

Status in QEMU:
  New

Bug description:
  Configuration:
  qemu is on a windows 10 host, address 192.168.1.24
  A tftp server, which is atftpd, is at address 192.168.1.31
  a guest is started by: 
  ```
  .\qemu-system-x86_64.exe -accel hax \
  -nic user,id=n1,tftp-server-name=192.168.1.31,bootfile=tftp://192.168.1.31/grub/i386-pc/core.0 \
  -object filter-dump,id=f1,netdev=n1,file=dump.dat
  ```

  qemu v4.2.0-11797-g2890edc853-dirty, from https://qemu.weilnetz.de/w64/
  windows 10 1909 18363.628

  Here is the captured traffic from dump.dat, no filter applied:
  No.	Time	Source	Destination	Protocol	Length	Info
  1	0.000000	0.0.0.0	255.255.255.255	DHCP	439	DHCP Discover - Transaction ID 0xdb38340e
  2	0.000081	10.0.2.2	255.255.255.255	DHCP	590	DHCP Offer    - Transaction ID 0xdb38340e
  3	1.035670	0.0.0.0	255.255.255.255	DHCP	439	DHCP Discover - Transaction ID 0xdb38340e
  4	1.035693	10.0.2.2	255.255.255.255	DHCP	590	DHCP Offer    - Transaction ID 0xdb38340e
  5	3.068055	0.0.0.0	255.255.255.255	DHCP	451	DHCP Request  - Transaction ID 0xdb38340e
  6	3.068099	10.0.2.2	255.255.255.255	DHCP	590	DHCP ACK      - Transaction ID 0xdb38340e
  7	3.068209	RealtekU_12:34:56	Broadcast	ARP	42	ARP Announcement for 10.0.2.15
  8	3.148419	RealtekU_12:34:56	Broadcast	ARP	42	Who has 10.0.2.2? Tell 10.0.2.15
  9	3.148449	52:55:0a:00:02:02	RealtekU_12:34:56	ARP	64	10.0.2.2 is at 52:55:0a:00:02:02
  10	3.148511	10.0.2.15	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  11	3.398093	10.0.2.15	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  12	3.946041	10.0.2.15	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  13	4.990262	10.0.2.15	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  14	7.022839	10.0.2.15	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  15	11.087041	10.0.2.15	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0

  
  Here is the captured traffic at host NIC, filered by from or to 192.168.1.31
  No.	Time	Source	Destination	Protocol	Length	Info
  14140	57.729066	192.168.1.24	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  14141	57.732988	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14255	57.977995	192.168.1.24	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  14256	57.979876	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14275	58.525939	192.168.1.24	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  14276	58.527819	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14328	59.570178	192.168.1.24	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  14329	59.581024	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14383	61.602742	192.168.1.24	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  14384	61.605554	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14730	62.736572	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14741	62.987924	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14756	63.533477	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14815	64.577653	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  14916	65.666959	192.168.1.24	192.168.1.31	TFTP	91	Read Request, File: grub/i386-pc/core.0, Transfer type: octet, blksize=1432, tsize=0
  14917	65.668778	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  15235	66.615186	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  15481	67.745250	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  15509	67.991523	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  15566	68.539050	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  16691	69.583531	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  17457	70.675366	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  17599	71.615337	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  17904	72.747338	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  18012	72.995681	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  18192	73.544257	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  18360	74.588002	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  18981	75.679037	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  19270	76.620528	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  19839	77.752338	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  19852	78.001267	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  19917	78.548965	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20066	79.593232	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20140	80.684604	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20220	81.625996	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20537	82.824574	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20551	83.033318	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20607	83.555510	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20734	84.598612	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20816	85.691535	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  20898	86.631036	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432
  22311	90.695296	192.168.1.31	192.168.1.24	TFTP	69	Option Acknowledgement, tsize=45542, blksize=1432

  From the traffic, the guest sent the request properly, and it is
  rerouted outside properly, and the server respond to it properly.
  However, the guest never received the response.

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  reply	other threads:[~2020-02-07 20:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-07 19:58 [Bug 1862415] [NEW] -nic user cannot receive TFTP response from outside on windows 10 host yw662
2020-02-07 19:59 ` yw662 [this message]
2020-02-07 20:06 ` [Bug 1862415] " yw662
2020-02-10 15:47 ` yw662
2021-05-05 15:20 ` Thomas Huth
2021-07-05  4:17 ` Launchpad Bug Tracker

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