From: Roy Marples <roy@marples.name>
Date: Wed, 27 May 2020 22:34:16 +0000 (+0100)
Subject: dhcpcd.conf: harden default options
X-Git-Tag: v9.1.0~13
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2a52d7b81b3bc29885b93ea234ad2932adf65125;p=thirdparty%2Fdhcpcd.git

dhcpcd.conf: harden default options

Don't send the current hostname.
Don't send the default vendorclassid.
Slight re-org while here.
---

diff --git a/src/dhcpcd.conf b/src/dhcpcd.conf
index 537ed77b..916e82da 100644
--- a/src/dhcpcd.conf
+++ b/src/dhcpcd.conf
@@ -5,7 +5,7 @@
 #controlgroup wheel
 
 # Inform the DHCP server of our hostname for DDNS.
-hostname
+#hostname
 
 # Use the hardware address of the interface for the Client ID.
 #clientid
@@ -18,20 +18,27 @@ duid
 # Persist interface configuration when dhcpcd exits.
 persistent
 
-# Rapid commit support.
-# Safe to enable by default because it requires the equivalent option set
-# on the server to actually work.
-option rapid_commit
+# vendorclassid is set to blank to avoid sending the default of
+# dhcpcd-<version>:<os>:<machine>:<platform>
+vendorclassid
 
 # A list of options to request from the DHCP server.
-option domain_name_servers, domain_name, domain_search, host_name
+option domain_name_servers, domain_name, domain_search
 option classless_static_routes
 # Respect the network MTU. This is applied to DHCP routes.
 option interface_mtu
 
+# Request a hostname from the network
+option host_name
+
 # Most distributions have NTP support.
 #option ntp_servers
 
+# Rapid commit support.
+# Safe to enable by default because it requires the equivalent option set
+# on the server to actually work.
+option rapid_commit
+
 # A ServerID is required by RFC2131.
 require dhcp_server_identifier