diff --git a/core/installer/config.go b/core/installer/config.go
index be35735..5269512 100644
--- a/core/installer/config.go
+++ b/core/installer/config.go
@@ -1,6 +1,7 @@
 package installer
 
 import (
+	"net"
 	"net/netip"
 )
 
@@ -21,6 +22,13 @@
 	ServiceIPs                EnvServiceIPs `json:"serviceIPs"`
 }
 
+type EnvCIDR struct {
+	Name string
+	IP   net.IP
+}
+
+type EnvCIDRs []EnvCIDR
+
 type Config struct {
 	Values Values `json:"input"` // TODO(gio): rename
 }