diff --git a/roles/dhcpd/defaults/main.yml b/roles/dhcpd/defaults/main.yml
index 5b4d92f..f87abc1 100644
--- a/roles/dhcpd/defaults/main.yml
+++ b/roles/dhcpd/defaults/main.yml
@@ -1,5 +1,6 @@
 ---
 
+dhcp_mtu: 1280
 dhcp_first: "{{ batman_ipv4 | ipaddr('512') | ipaddr('address') }}"
 dhcp_last: "{{ batman_ipv4 | ipaddr('2558') | ipaddr('address') }}"
 name_server: "{{ batman_ipv4 | ipaddr('address') }}"
diff --git a/roles/dhcpd/templates/dhcpd.conf.j2 b/roles/dhcpd/templates/dhcpd.conf.j2
index 8adeaab..285ca66 100644
--- a/roles/dhcpd/templates/dhcpd.conf.j2
+++ b/roles/dhcpd/templates/dhcpd.conf.j2
@@ -24,6 +24,7 @@ log-facility local7;
 # Freifunk Regensburg
 subnet {{ batman_ipv4 | ipaddr('network') }} netmask {{ batman_ipv4 | ipaddr('netmask') }} {
   option routers {{ batman_ipv4 | ipaddr('address') }};
+  option interface-mtu {{ dhcp_mtu }};
   pool {
     range {{ dhcp_first }} {{ dhcp_last }} ;
   }