Merge pull request #7943 from baude/issue7807

prevent unpredictable results with network create|remove

1 files changed, 19 insertions, 0 deletions

diff --git a/libpod/network/ip.go b/libpod/network/ip.go
new file mode 100644
index 000000000..ba93a0d05
--- /dev/null
+++ b/libpod/network/ip.go
@@ -0,0 +1,19 @@
+package network
+
+import (
+	"net"
+
+	"github.com/containernetworking/plugins/pkg/ip"
+)
+
+// CalcGatewayIP takes a network and returns the first IP in it.
+func CalcGatewayIP(ipn *net.IPNet) net.IP {
+	// taken from cni bridge plugin as it is not exported
+	nid := ipn.IP.Mask(ipn.Mask)
+	return ip.NextIP(nid)
+}
+
+// IsIPv6 returns if netIP is IPv6.
+func IsIPv6(netIP net.IP) bool {
+	return netIP != nil && netIP.To4() == nil
+}