iptables: enable TCP matching with "-m tcp".

A couple other things that changed:

- There's a proper extension registration system for matchers. Anyone
  adding another matcher can use tcp_matcher.go or udp_matcher.go as a
  template.
- All logging and use of syserr.Error in the netfilter package happens at the
  highest possible level (public functions). Lower-level functions just
  return normal, descriptive golang errors.

0 files changed, 0 insertions, 0 deletions