Write simple ACCEPT rules to the filter table.

This gets us closer to passing the iptables tests and opens up iptables
so it can be worked on by multiple people.

A few restrictions are enforced for security (i.e. we don't want to let
users write a bunch of iptables rules and then just not enforce them):

- Only the filter table is writable.
- Only ACCEPT rules with no matching criteria can be added.

1 files changed, 10 insertions, 0 deletions

diff --git a/go.sum b/go.sum
index 7a0bc175a..cf092956e 100644
--- a/go.sum
+++ b/go.sum
@@ -1,19 +1,29 @@
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