FAQ and example config additions for Windows 7 WPAD problem.

diff --git a/FAQ b/FAQ
index 3ab39eea1083b855bc4a72ea38d37a9afcc77ab3..b7c4f4b577f883aaa77e05a4e9b95c9fadc98af5 100644 (file)
--- a/FAQ
+++ b/FAQ
@@ -467,8 +467,18 @@ A: The DHCP client on windows Vista (and possibly later versions)
    work).
 
   
-
-
+Q: DHCP doesn't work with windows 7 but everything else is fine.
+
+A: There seems to be a problem if Windows 7 doesn't get a value for
+   DHCP option 252 in DHCP packets it gets from the server. The
+   symtoms have beeen variously reported as continual DHCPINFORM
+   requests in an attempt to get an option-252, or even ignoring DHCP
+   offers completely (and failing to get an IP address) if there is no
+   option-252 supplied. DHCP option 252 is for WPAD, WWW Proxy 
+   Auto Detection and if you don't want or need to use that, then 
+   simplest fix seems to be to supply an empty option with:
+
+   dhcp-option=252,"\n"
 
 
 

diff --git a/dnsmasq.conf.example b/dnsmasq.conf.example
index f46a3171bcd42a51f89be6d58bfdb292643a0d54..f2ec51a6015401c8fc2b008fa6fa4a207500ed97 100644 (file)
--- a/dnsmasq.conf.example
+++ b/dnsmasq.conf.example
@@ -304,6 +304,9 @@
 #dhcp-option=45,0.0.0.0     # netbios datagram distribution server
 #dhcp-option=46,8           # netbios node type
 
+# Send an empty WPAD option. This may be REQUIRED to get windows 7 to behave.
+#dhcp-option=252,"\n"
+
 # Send RFC-3397 DNS domain search DHCP option. WARNING: Your DHCP client
 # probably doesn't support this......
 #dhcp-option=option:domain-search,eng.apple.com,marketing.apple.com