From 75d3e279288ee74d730c286e4a4e05b03d191cf8 Mon Sep 17 00:00:00 2001
From: Manuel Buil <mbuil@suse.com>
Date: Thu, 26 Aug 2021 20:18:26 +0200
Subject: [PATCH] Add functions to separate ipv4 from ipv6 functions

Signed-off-by: Manuel Buil <mbuil@suse.com>
---
 pkg/util/net.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/pkg/util/net.go b/pkg/util/net.go
index f5dd6b0f42..390575f44b 100644
--- a/pkg/util/net.go
+++ b/pkg/util/net.go
@@ -63,3 +63,25 @@ func GetFirst4String(elems []string) (string, error) {
 	}
 	return ip.String(), nil
 }
+
+// JoinIP4Nets stringifies and joins a list of IPv4 networks with commas.
+func JoinIP4Nets(elems []*net.IPNet) string {
+	var strs []string
+	for _, elem := range elems {
+		if elem != nil && elem.IP.To4() != nil {
+			strs = append(strs, elem.String())
+		}
+	}
+	return strings.Join(strs, ",")
+}
+
+// JoinIP6Nets stringifies and joins a list of IPv6 networks with commas.
+func JoinIP6Nets(elems []*net.IPNet) string {
+	var strs []string
+	for _, elem := range elems {
+		if elem != nil && elem.IP.To4() == nil {
+			strs = append(strs, elem.String())
+		}
+	}
+	return strings.Join(strs, ",")
+}