diff --git a/src/client/ns_turn_ioaddr.c b/src/client/ns_turn_ioaddr.c
index e917ef8a..4d2be204 100644
--- a/src/client/ns_turn_ioaddr.c
+++ b/src/client/ns_turn_ioaddr.c
@@ -483,7 +483,7 @@ int ioa_addr_is_loopback(ioa_addr *addr)
 			return (u[0] == 127 || u[0] == 0);
 		} else if(addr->ss.sa_family == AF_INET6) {
 			const uint8_t *u = ((const uint8_t*)&(addr->s6.sin6_addr));
-			if(u[15] == 1) {
+			if(u[15] == 1 || u[15] == 0) {
 				int i;
 				for(i=0;i<15;++i) {
 					if(u[i])