net/tailscale/patches/020-tailscaled_fake_iptables.patch

   1 --- a/wgengine/router/router_linux.go
   2 +++ b/wgengine/router/router_linux.go
   3 @@ -129,7 +129,7 @@ func newUserspaceRouter(logf logger.Logf
   4
   5         ipt4, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
   6         if err != nil {
   7 -               return nil, err
   8 +               ipt4, err = iptables.NewFakeWithProtocol(iptables.ProtocolIPv4)
   9         }
  10
  11         v6err := checkIPv6(logf)
  12 @@ -148,7 +148,7 @@ func newUserspaceRouter(logf logger.Logf
  13                 // if unavailable. We want that to be a non-fatal error.
  14                 ipt6, err = iptables.NewWithProtocol(iptables.ProtocolIPv6)
  15                 if err != nil {
  16 -                       return nil, err
  17 +                       ipt6, err = iptables.NewFakeWithProtocol(iptables.ProtocolIPv6)
  18                 }
  19         }
  20
  21 @@ -1676,11 +1676,6 @@ func checkIPv6(logf logger.Logf) error {
  22                 return fmt.Errorf("kernel doesn't support IPv6 policy routing: %w", err)
  23         }
  24
  25 -       // Some distros ship ip6tables separately from iptables.
  26 -       if _, err := exec.LookPath("ip6tables"); err != nil {
  27 -               return err
  28 -       }
  29 -
  30         return nil
  31  }
  32