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[Qemu-devel] PATCH: access samba-server on host OS with -user-net
From: |
Mark Jonckheere |
Subject: |
[Qemu-devel] PATCH: access samba-server on host OS with -user-net |
Date: |
Tue, 31 Aug 2004 12:53:26 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.9) Gecko/20020408 |
After switching from TUN/TAP-based to slirp-based networking, I
discovered that a windows 98 client couldn't access the samba server
on the linux host anymore.
After some debugging it became clear that UDP messages sent with a
broadcast destination address 10.0.2.255 are answered with that same
broadcast address as a source address. These answers are ignored by
windows.
The following patch corrects this:
---8<------------------------------------
--- qemu/slirp/udp.c Tue Aug 24 23:57:12 2004
+++ qemu-patched/slirp/udp.c Tue Aug 31 11:25:22 2004
@@ -314,6 +314,8 @@
saddr = *addr;
if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr)
saddr.sin_addr.s_addr = so->so_faddr.s_addr;
+ if ((so->so_faddr.s_addr & htonl(0x000000ff)) == htonl(0xff))
+ saddr.sin_addr.s_addr = special_addr.s_addr | htonl(CTL_ALIAS);
daddr.sin_addr = so->so_laddr;
daddr.sin_port = so->so_lport;
---8<------------------------------------
Groeten,
Mark.
--
:wq
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