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authorMike Ryan <[email protected]>2010-12-01 11:16:47 -0800
committerMichael S. Tsirkin <[email protected]>2010-12-09 12:45:50 +0200
commit3a75e74c76cef8daa7944159b016c4ee7c56e568 (patch)
tree9b3b7f9f45c49a3d29d6bfb3b0d553b525942191 /net.c
parent138b38b61bf92d4e9588acf934e532499c94e185 (diff)
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net/sock: option to specify local address
Add an option to specify the host IP to send multicast packets from, when using a multicast socket for networking. The option takes an IP address and sets the IP_MULTICAST_IF socket option, which causes the packets to use that IP's interface as an egress. This is useful if the host machine has several interfaces with several virtual networks across disparate interfaces. Signed-off-by: Mike Ryan <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]>
Diffstat (limited to 'net.c')
-rw-r--r--net.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net.c b/net.c
index c5e6063fc..9ba5be22d 100644
--- a/net.c
+++ b/net.c
@@ -1050,6 +1050,10 @@ static const struct {
.name = "mcast",
.type = QEMU_OPT_STRING,
.help = "UDP multicast address and port number",
+ }, {
+ .name = "localaddr",
+ .type = QEMU_OPT_STRING,
+ .help = "source address for multicast packets",
},
{ /* end of list */ }
},