diff --git a/playbooks/inventory/group_vars/localhost b/playbooks/inventory/group_vars/localhost
index 4a5d1217c..9bbbea937 100644
--- a/playbooks/inventory/group_vars/localhost
+++ b/playbooks/inventory/group_vars/localhost
@@ -57,3 +57,8 @@ transform_boot_image: false
 
 # Create IPA image instead of downloading an pre-made CoreOS IPA image.
 create_ipa_image: false
+
+# Dnsmasq default route for clients. If not defined, dnsmasq will push to clients
+# as default route the same IP of the dnsmasq server.
+# Default: undefined
+# dnsmasq_router: {{ ipv4_gateway }}
diff --git a/playbooks/roles/bifrost-ironic-install/defaults/main.yml b/playbooks/roles/bifrost-ironic-install/defaults/main.yml
index 2f352b28e..e708f638a 100644
--- a/playbooks/roles/bifrost-ironic-install/defaults/main.yml
+++ b/playbooks/roles/bifrost-ironic-install/defaults/main.yml
@@ -45,8 +45,12 @@ shade_git_folder: /opt/stack/shade
 dib_git_folder: /opt/stack/diskimage-builder
 # Comma separated list, in the format of a string, of drivers that are enabled.
 enabled_drivers: "agent_ipmitool,pxe_amt,agent_ilo,agent_ucs"
-# DHCP pool for requests
+# DHCP pool for requests.
 dhcp_pool_start: 192.168.1.200
 dhcp_pool_end: 192.168.1.250
 # Default network interface that Bifrost will be attached to.
 network_interface: "virbr0"
+# Dnsmasq default route for clients. If not defined, dnsmasq will push to clients
+# as default route the same IP of the dnsmasq server.
+# Default: undefined
+# dnsmasq_router:
diff --git a/playbooks/roles/bifrost-ironic-install/templates/dnsmasq.conf.j2 b/playbooks/roles/bifrost-ironic-install/templates/dnsmasq.conf.j2
index 89794eb82..88234734e 100644
--- a/playbooks/roles/bifrost-ironic-install/templates/dnsmasq.conf.j2
+++ b/playbooks/roles/bifrost-ironic-install/templates/dnsmasq.conf.j2
@@ -321,9 +321,11 @@ dhcp-range={{dhcp_pool_start}},{{dhcp_pool_end}},12h
 
 # Override the default route supplied by dnsmasq, which assumes the
 # router is the same machine as the one running dnsmasq.
-#dhcp-option=3,1.2.3.4
+{% if dnsmasq_router is defined %}
+dhcp-option=3,{{dnsmasq_router}}
+{% endif %}
 
-# Do the same thing, but using the option name
+# Do the same thing, but using the option name.
 #dhcp-option=option:router,1.2.3.4
 
 # Override the default route supplied by dnsmasq and send no default