2 files changed, 15 insertions, 0 deletions
diff --git a/gui/src/shared/daemon-rpc-types.ts b/gui/src/shared/daemon-rpc-types.ts
index 0ce24bf8a2..8e42147f43 100644
--- a/gui/src/shared/daemon-rpc-types.ts
+++ b/gui/src/shared/daemon-rpc-types.ts
@@ -130,10 +130,13 @@ export interface IOpenVpnConstraints {
 
 export interface IWireguardConstraints {
   port: Constraint<number>;
+  ipVersion: Constraint<IpVersion>;
 }
 
 export type TunnelProtocol = 'wireguard' | 'openvpn';
 
+export type IpVersion = 'ipv4' | 'ipv6';
+
 interface IRelaySettingsNormal<OpenVpn, Wireguard> {
   location: Constraint<RelayLocation>;
   tunnelProtocol: Constraint<TunnelProtocol>;
diff --git a/gui/src/shared/relay-settings-builder.ts b/gui/src/shared/relay-settings-builder.ts
index 182e44063f..418de10888 100644
--- a/gui/src/shared/relay-settings-builder.ts
+++ b/gui/src/shared/relay-settings-builder.ts
@@ -1,6 +1,7 @@
 import {
   Constraint,
   IOpenVpnConstraints,
+  IpVersion,
   IWireguardConstraints,
   RelayProtocol,
   RelaySettingsNormalUpdate,
@@ -21,6 +22,7 @@ interface IOpenVPNConfigurator {
 
 interface IWireguardConfigurator {
   port: IExactOrAny<number, IWireguardConfigurator>;
+  ipVersion: IExactOrAny<IpVersion, IWireguardConfigurator>;
 }
 
 interface ITunnelProtocolConfigurator {
@@ -125,6 +127,16 @@ class NormalRelaySettingsBuilder {
               any: () => apply('any'),
             };
           },
+          get ipVersion() {
+            const apply = (ipVersion: Constraint<IpVersion>) => {
+              updateWireguard({ ipVersion });
+              return this;
+            };
+            return {
+              exact: (value: IpVersion) => apply({ only: value }),
+              any: () => apply('any'),
+            };
+          },
         };
         configurator(wireguardBuilder);
         return this;