diff -Nur a/system-linux.c netifd-2019-08-05-5e02f944/system-linux.c
--- a/system-linux.c	2020-05-04 12:50:37.870719671 -0700
+++ netifd-2019-08-05-5e02f944/system-linux.c	2020-05-04 12:57:00.512680452 -0700
@@ -2561,8 +2561,7 @@
 static int system_add_ip6_tunnel(const char *name, const unsigned int link,
 				 struct blob_attr **tb)
 {
-	struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
-				NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
+	struct nl_msg *nlm = nlmsg_alloc_size(65536);
 	struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
 	struct blob_attr *cur;
 	int ret = 0, ttl = 0;
@@ -2570,6 +2569,12 @@
 	if (!nlm)
 		return -1;
 
+	struct nlmsghdr *new = nlm->nm_nlh;
+	new->nlmsg_type = RTM_NEWLINK;
+	new->nlmsg_flags = NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE;
+	new->nlmsg_seq = 0;
+	new->nlmsg_pid = 0;
+
 	nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
 	nla_put_string(nlm, IFLA_IFNAME, name);