diff --git a/config/etc/sysctl.conf b/config/etc/sysctl.conf
index ad562404f..f3897c3c7 100644
--- a/config/etc/sysctl.conf
+++ b/config/etc/sysctl.conf
@@ -1,6 +1,9 @@
 net.ipv4.ip_forward = 1
 net.ipv4.ip_dynaddr = 1
 
+# Disable Path MTU Discovery
+net.ipv4.ip_no_pmtu_disc = 1
+
 net.ipv4.icmp_echo_ignore_broadcasts = 1
 net.ipv4.icmp_ignore_bogus_error_responses = 1
 net.ipv4.icmp_ratelimit = 1000
diff --git a/config/rootfiles/core/120/filelists/files b/config/rootfiles/core/120/filelists/files
index 5b1359ac3..3df114800 100644
--- a/config/rootfiles/core/120/filelists/files
+++ b/config/rootfiles/core/120/filelists/files
@@ -1,5 +1,6 @@
 etc/system-release
 etc/issue
+etc/sysctl.conf
 etc/fcron.daily/openvpn-crl-updater
 etc/rc.d/init.d/dhcp
 srv/web/ipfire/cgi-bin/ovpnmain.cgi