fix: enables bridge-nf-call-iptables by default

Signed-off-by: Sam Berning <[email protected]>

finch.yaml

@@ -143,6 +143,15 @@ provision:
 - mode: boot
   script: |
     modprobe virtiofs
+- mode: boot
+  script: |
+    modprobe br_netfilter
+    cat <<EOF > /etc/sysctl.d/99-finch.conf
+    net.bridge.bridge-nf-call-iptables = 1
+    net.bridge.bridge-nf-call-ip6tables = 1
+    net.ipv4.ip_forward = 1
+    EOF
+    sysctl --system
 # # `user` is executed without the root privilege
 - mode: user
   script: |