diff --git a/src/add-ons/kernel/network/protocols/ipv6/ipv6.cpp b/src/add-ons/kernel/network/protocols/ipv6/ipv6.cpp
index 177b91faf8..0a5120fb96 100644
--- a/src/add-ons/kernel/network/protocols/ipv6/ipv6.cpp
+++ b/src/add-ons/kernel/network/protocols/ipv6/ipv6.cpp
@@ -1141,6 +1141,8 @@ ipv6_setsockopt(net_protocol* _protocol, int level, int option,
 
 			delete protocol->multicast_address;
 			protocol->multicast_address = (struct sockaddr*)address;
+
+			sDatalinkModule->put_interface(interface);
 			return B_OK;
 		}
 		if (option == IPV6_MULTICAST_HOPS) {