1 files changed, 5 insertions, 0 deletions
diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go
index f664673b3..ba2dd85b8 100644
--- a/pkg/tcpip/tcpip.go
+++ b/pkg/tcpip/tcpip.go
@@ -168,6 +168,11 @@ func NewSubnet(a Address, m AddressMask) (Subnet, error) {
 	return Subnet{a, m}, nil
 }
 
+// String implements Stringer.
+func (s Subnet) String() string {
+	return fmt.Sprintf("%s/%d", s.ID(), s.Prefix())
+}
+
 // Contains returns true iff the address is of the same length and matches the
 // subnet address and mask.
 func (s *Subnet) Contains(a Address) bool {