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-rw-r--r--qemu-options.hx4
1 files changed, 3 insertions, 1 deletions
diff --git a/qemu-options.hx b/qemu-options.hx
index c745e0ca26..d78b738c77 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -810,7 +810,7 @@ DEF("net", HAS_ARG, QEMU_OPTION_net,
"-net tap[,vlan=n][,name=str],ifname=name\n"
" connect the host TAP network interface to VLAN 'n'\n"
#else
- "-net tap[,vlan=n][,name=str][,fd=h][,ifname=name][,script=file][,downscript=dfile][,sndbuf=nbytes]\n"
+ "-net tap[,vlan=n][,name=str][,fd=h][,ifname=name][,script=file][,downscript=dfile][,sndbuf=nbytes][,vnet_hdr=on|off]\n"
" connect the host TAP network interface to VLAN 'n' and use the\n"
" network scripts 'file' (default=%s)\n"
" and 'dfile' (default=%s);\n"
@@ -818,6 +818,8 @@ DEF("net", HAS_ARG, QEMU_OPTION_net,
" use 'fd=h' to connect to an already opened TAP interface\n"
" use 'sndbuf=nbytes' to limit the size of the send buffer; the\n"
" default of 'sndbuf=1048576' can be disabled using 'sndbuf=0'\n"
+ " use vnet_hdr=off to avoid enabling the IFF_VNET_HDR tap flag; use\n"
+ " vnet_hdr=on to make the lack of IFF_VNET_HDR support an error condition\n"
#endif
"-net socket[,vlan=n][,name=str][,fd=h][,listen=[host]:port][,connect=host:port]\n"
" connect the vlan 'n' to another VLAN using a socket connection\n"