diff --git a/fogcutter/docker/caddy.sh b/fogcutter/docker/caddy.sh
index c4aa404..62b4aaa 100755
--- a/fogcutter/docker/caddy.sh
+++ b/fogcutter/docker/caddy.sh
@@ -3,7 +3,9 @@
 set -e
 
 up () {
-  docker network create pew-net || true
+  # Ensure iptables rules exist
+  # https://askubuntu.com/questions/1052919/iptables-reload-restart-on-ubuntu/1072948#1072948
+  docker network create --ipv6 --subnet "fd01::/80" pew-net || true
   
   # main caddy container
   docker run \
diff --git a/fogcutter/docker/firefly.sh b/fogcutter/docker/firefly.sh
index ed646b3..0b8176f 100755
--- a/fogcutter/docker/firefly.sh
+++ b/fogcutter/docker/firefly.sh
@@ -6,7 +6,9 @@ set -e
 # https://docs.firefly-iii.org/firefly-iii/advanced-installation/cron/
 
 up () {
-  docker network create pew-net || true
+   # Ensure iptables rules exist
+  # https://askubuntu.com/questions/1052919/iptables-reload-restart-on-ubuntu/1072948#1072948
+  docker network create --ipv6 --subnet "fd01::/80" pew-net || true
 
   # Exposed on port 8080 in pew-net
   # env options: https://raw.githubusercontent.com/firefly-iii/firefly-iii/main/.env.example
diff --git a/fogcutter/docker/geoserver.sh b/fogcutter/docker/geoserver.sh
index f3587c1..3b544d0 100755
--- a/fogcutter/docker/geoserver.sh
+++ b/fogcutter/docker/geoserver.sh
@@ -3,7 +3,9 @@
 set -e
 
 up () {
-  docker network create pew-net || true
+  # Ensure iptables rules exist
+  # https://askubuntu.com/questions/1052919/iptables-reload-restart-on-ubuntu/1072948#1072948
+  docker network create --ipv6 --subnet "fd01::/80" pew-net || true
 
   # Exposed on port 8080 in pew-net  
   docker run \
diff --git a/fogcutter/docker/gitea.sh b/fogcutter/docker/gitea.sh
index 076b5d6..ebed682 100755
--- a/fogcutter/docker/gitea.sh
+++ b/fogcutter/docker/gitea.sh
@@ -3,7 +3,9 @@
 set -e
 
 up () {
-  docker network create pew-net || true
+  # Ensure iptables rules exist
+  # https://askubuntu.com/questions/1052919/iptables-reload-restart-on-ubuntu/1072948#1072948
+  docker network create --ipv6 --subnet "fd01::/80" pew-net || true
 
   # Exposed on port 3000 in pew-net  
   docker run \
diff --git a/fogcutter/docker/mapproxy.sh b/fogcutter/docker/mapproxy.sh
index de730fa..ef2ebf3 100755
--- a/fogcutter/docker/mapproxy.sh
+++ b/fogcutter/docker/mapproxy.sh
@@ -3,7 +3,9 @@
 set -e
 
 up () {
-  docker network create pew-net || true
+  # Ensure iptables rules exist
+  # https://askubuntu.com/questions/1052919/iptables-reload-restart-on-ubuntu/1072948#1072948
+  docker network create --ipv6 --subnet "fd01::/80" pew-net || true
 
   # Exposed on port 8080 in pew-net  
   docker run \
diff --git a/fogcutter/docker/mastodon.sh b/fogcutter/docker/mastodon.sh
index db4daa7..74b4532 100755
--- a/fogcutter/docker/mastodon.sh
+++ b/fogcutter/docker/mastodon.sh
@@ -12,7 +12,9 @@ DB_PASS=mastodon
 DB_PORT=5432
 
 up () {
-  docker network create pew-net || true
+  # Ensure iptables rules exist
+  # https://askubuntu.com/questions/1052919/iptables-reload-restart-on-ubuntu/1072948#1072948
+  docker network create --ipv6 --subnet "fd01::/80" pew-net || true
 
   docker run \
     --detach \
diff --git a/fogcutter/docker/plex.sh b/fogcutter/docker/plex.sh
index e43464f..a59fa70 100755
--- a/fogcutter/docker/plex.sh
+++ b/fogcutter/docker/plex.sh
@@ -3,7 +3,9 @@
 set -e
 
 up () {
-  docker network create pew-net || true
+  # Ensure iptables rules exist
+  # https://askubuntu.com/questions/1052919/iptables-reload-restart-on-ubuntu/1072948#1072948
+  docker network create --ipv6 --subnet "fd01::/80" pew-net || true
 
   # Exposed on port 32400 in pew-net  
   docker run \