Update dependencies

vendor/github.com/tailscale/netlink/rule.go

@@ -0,0 +1,103 @@
+package netlink
+
+import (
+	"fmt"
+	"net"
+
+	"golang.org/x/sys/unix"
+)
+
+// Rule represents a netlink rule.
+type Rule struct {
+	Priority          int
+	Family            int
+	Table             int
+	Mark              int
+	Mask              int
+	Tos               uint
+	TunID             uint
+	Goto              int
+	Src               *net.IPNet
+	Dst               *net.IPNet
+	Flow              int
+	IifName           string
+	OifName           string
+	SuppressIfgroup   int
+	SuppressPrefixlen int
+	Invert            bool
+	Dport             *RulePortRange
+	Sport             *RulePortRange
+
+	// Type is the unix.RTN_* rule type, such as RTN_UNICAST
+	// or RTN_UNREACHABLE.
+	// When adding a new rule, zero means automatic.
+	Type uint8
+}
+
+func (r Rule) String() string {
+	from := "all"
+	if r.Src != nil && r.Src.String() != "<nil>" {
+		from = r.Src.String()
+	}
+
+	to := "all"
+	if r.Dst != nil && r.Dst.String() != "<nil>" {
+		to = r.Dst.String()
+	}
+
+	var typ string
+	switch r.Type {
+	case unix.RTN_UNSPEC: // zero
+		typ = ""
+	case unix.RTN_UNICAST:
+		typ = ""
+	case unix.RTN_LOCAL:
+		typ = " local"
+	case unix.RTN_BROADCAST:
+		typ = " broadcast"
+	case unix.RTN_ANYCAST:
+		typ = " anycast"
+	case unix.RTN_MULTICAST:
+		typ = " multicast"
+	case unix.RTN_BLACKHOLE:
+		typ = " blackhole"
+	case unix.RTN_UNREACHABLE:
+		typ = " unreachable"
+	case unix.RTN_PROHIBIT:
+		typ = " prohibit"
+	case unix.RTN_THROW:
+		typ = " throw"
+	case unix.RTN_NAT:
+		typ = " nat"
+	case unix.RTN_XRESOLVE:
+		typ = " xresolve"
+	default:
+		typ = fmt.Sprintf(" type(0x%x)", r.Type)
+	}
+	return fmt.Sprintf("ip rule %d: from %s to %s table %d%s",
+		r.Priority, from, to, r.Table, typ)
+}
+
+// NewRule return empty rules.
+func NewRule() *Rule {
+	return &Rule{
+		SuppressIfgroup:   -1,
+		SuppressPrefixlen: -1,
+		Priority:          -1,
+		Mark:              -1,
+		Mask:              -1,
+		Goto:              -1,
+		Flow:              -1,
+	}
+}
+
+// NewRulePortRange creates rule sport/dport range.
+func NewRulePortRange(start, end uint16) *RulePortRange {
+	return &RulePortRange{Start: start, End: end}
+}
+
+// RulePortRange represents rule sport/dport range.
+type RulePortRange struct {
+	Start uint16
+	End   uint16
+}