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-rw-r--r--ansible/roles/network/files/rules.v66
-rw-r--r--ansible/roles/network/templates/rules.v4.j25
2 files changed, 11 insertions, 0 deletions
diff --git a/ansible/roles/network/files/rules.v6 b/ansible/roles/network/files/rules.v6
index 0f402bd..17ff71c 100644
--- a/ansible/roles/network/files/rules.v6
+++ b/ansible/roles/network/files/rules.v6
@@ -1,3 +1,9 @@
+# WARNING!! When rules.{v4,v6} are changed, the whole iptables configuration is reloaded.
+# This creates issues with Docker, which injects its own configuration in iptables when it starts.
+# In practice, most (all?) containers will break if rules.{v4,v6} are changed,
+# and docker will have to be restared.
+
+
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
diff --git a/ansible/roles/network/templates/rules.v4.j2 b/ansible/roles/network/templates/rules.v4.j2
index a77852f..b60d1ee 100644
--- a/ansible/roles/network/templates/rules.v4.j2
+++ b/ansible/roles/network/templates/rules.v4.j2
@@ -1,3 +1,8 @@
+# WARNING!! When rules.{v4,v6} are changed, the whole iptables configuration is reloaded.
+# This creates issues with Docker, which injects its own configuration in iptables when it starts.
+# In practice, most (all?) containers will break if rules.{v4,v6} are changed,
+# and docker will have to be restared.
+
*filter
:INPUT DROP [0:0]