ipv6: if assigned prefix is <= 64 add it as address else add it as route

6 files changed, 142 insertions, 87 deletions

diff --git a/accel-pppd/ifcfg.c b/accel-pppd/ifcfg.c
index 26926fa..685e1de 100644
--- a/accel-pppd/ifcfg.c
+++ b/accel-pppd/ifcfg.c
@@ -25,7 +25,7 @@
 struct in6_ifreq {
         struct in6_addr ifr6_addr;
         __u32           ifr6_prefixlen;
-        int             ifr6_ifindex; 
+        int             ifr6_ifindex;
 };
 
 static void devconf(struct ap_session *ses, const char *attr, const char *val)
@@ -65,7 +65,7 @@ void ap_session_ifup(struct ap_session *ses)
 		_free(ses->ifname_rename);
 		ses->ifname_rename = NULL;
 	}
-	
+
 	triton_event_fire(EV_SES_ACCT_START, ses);
 
 	if (ses->stop_time)
@@ -119,17 +119,17 @@ void __export ap_session_accounting_started(struct ap_session *ses)
 				addr.sin_family = AF_INET;
 				addr.sin_addr.s_addr = ses->ipv4->addr;
 				memcpy(&ifr.ifr_addr, &addr, sizeof(addr));
-				
+
 				if (ioctl(sock_fd, SIOCSIFADDR, &ifr))
 					log_ppp_error("failed to set IPv4 address: %s\n", strerror(errno));
-			
+
 				/*if (ses->ctrl->type == CTRL_TYPE_IPOE) {
 					addr.sin_addr.s_addr = 0xffffffff;
 					memcpy(&ifr.ifr_netmask, &addr, sizeof(addr));
 					if (ioctl(sock_fd, SIOCSIFNETMASK, &ifr))
 						log_ppp_error("failed to set IPv4 nask: %s\n", strerror(errno));
 				}*/
-				
+
 				addr.sin_addr.s_addr = ses->ipv4->peer_addr;
 
 				/*if (ses->ctrl->type == CTRL_TYPE_IPOE) {
@@ -142,7 +142,7 @@ void __export ap_session_accounting_started(struct ap_session *ses)
 						log_ppp_error("failed to add route: %s\n", strerror(errno));
 				} else*/ {
 					memcpy(&ifr.ifr_dstaddr, &addr, sizeof(addr));
-					
+
 					if (ioctl(sock_fd, SIOCSIFDSTADDR, &ifr))
 						log_ppp_error("failed to set peer IPv4 address: %s\n", strerror(errno));
 				}
@@ -154,7 +154,7 @@ void __export ap_session_accounting_started(struct ap_session *ses)
 				devconf(ses, "forwarding", "1");
 
 				memset(&ifr6, 0, sizeof(ifr6));
-				
+
 				if (ses->ctrl->ppp) {
 					ifr6.ifr6_addr.s6_addr32[0] = htons(0xfe80);
 					*(uint64_t *)(ifr6.ifr6_addr.s6_addr + 8) = ses->ipv6->intf_id;
@@ -164,17 +164,18 @@ void __export ap_session_accounting_started(struct ap_session *ses)
 					if (ioctl(sock6_fd, SIOCSIFADDR, &ifr6))
 						log_ppp_error("faild to set LL IPv6 address: %s\n", strerror(errno));
 				}
-				
+
 				list_for_each_entry(a, &ses->ipv6->addr_list, entry) {
+					a->installed = 0;
 					/*if (a->prefix_len < 128) {
 						build_addr(a, ses->ipv6->intf_id, &ifr6.ifr6_addr);
 						ifr6.ifr6_prefixlen = a->prefix_len;
 
 						if (ioctl(sock6_fd, SIOCSIFADDR, &ifr6))
 							log_ppp_error("failed to add IPv6 address: %s\n", strerror(errno));
-					} else*/
+					} else
 					if (ip6route_add(ses->ifindex, &a->addr, a->prefix_len, 0))
-						log_ppp_error("failed to add IPv6 route: %s\n", strerror(errno));
+						log_ppp_error("failed to add IPv6 route: %s\n", strerror(errno));*/
 				}
 			}
 
@@ -195,7 +196,7 @@ void __export ap_session_accounting_started(struct ap_session *ses)
 					if (ioctl(ppp->unit_fd, PPPIOCSNPMODE, &np))
 						log_ppp_error("failed to set NP (IPv4) mode: %s\n", strerror(errno));
 				}
-				
+
 				if (ses->ipv6) {
 					np.protocol = PPP_IPV6;
 					np.mode = NPMODE_PASS;
@@ -208,7 +209,7 @@ void __export ap_session_accounting_started(struct ap_session *ses)
 		}
 #endif
 	}
-	
+
 	ses->ctrl->started(ses);
 
 	triton_event_fire(EV_SES_STARTED, ses);
@@ -244,7 +245,7 @@ void __export ap_session_ifdown(struct ap_session *ses)
 		ifr6.ifr6_ifindex = ses->ifindex;
 
 		ioctl(sock6_fd, SIOCDIFADDR, &ifr6);
-	
+
 		list_for_each_entry(a, &ses->ipv6->addr_list, entry) {
 			if (a->prefix_len == 128)
 				continue;
@@ -263,7 +264,7 @@ int __export ap_session_rename(struct ap_session *ses, const char *ifname, int l
 
 	if (len == -1)
 		len = strlen(ifname);
-	
+
 	if (len >= IFNAMSIZ - 1) {
 		log_ppp_warn("cannot rename interface (name is too long)\n");
 		return -1;
@@ -272,7 +273,7 @@ int __export ap_session_rename(struct ap_session *ses, const char *ifname, int l
 	strcpy(ifr.ifr_name, ses->ifname);
 	memcpy(ifr.ifr_newname, ifname, len);
 	ifr.ifr_newname[len] = 0;
-	
+
 	if (ioctl(sock_fd, SIOCSIFNAME, &ifr)) {
 		if (!ses->ifname_rename)
 			ses->ifname_rename = _strdup(ifr.ifr_newname);
@@ -281,7 +282,7 @@ int __export ap_session_rename(struct ap_session *ses, const char *ifname, int l
 			return -1;
 		}
 	} else {
-		log_ppp_info2("rename interface to '%s'\n", ifr.ifr_newname);	
+		log_ppp_info2("rename interface to '%s'\n", ifr.ifr_newname);
 		memcpy(ses->ifname, ifname, len);
 		ses->ifname[len] = 0;
 	}
diff --git a/accel-pppd/ipdb.h b/accel-pppd/ipdb.h
index 7f61b43..d461c88 100644
--- a/accel-pppd/ipdb.h
+++ b/accel-pppd/ipdb.h
@@ -1,8 +1,6 @@
 #ifndef IPDB_H
 #define IPDB_H
 
-#include <netinet/in.h>
-
 #include "ppp.h"
 #include "list.h"
 
@@ -20,6 +18,7 @@ struct ipv6db_addr_t
 	struct in6_addr addr;
 	int prefix_len;
 	int flag_auto:1;
+	int installed:1;
 };
 
 struct ipv6db_item_t
@@ -40,7 +39,7 @@ struct ipv6db_prefix_t
 struct ipdb_t
 {
 	struct list_head entry;
-	
+
 	struct ipv4db_item_t *(*get_ipv4)(struct ap_session *ses);
 	void (*put_ipv4)(struct ap_session *ses, struct ipv4db_item_t *);
 
diff --git a/accel-pppd/ipv6/dhcpv6.c b/accel-pppd/ipv6/dhcpv6.c
index 62f20bb..3f9df71 100644
--- a/accel-pppd/ipv6/dhcpv6.c
+++ b/accel-pppd/ipv6/dhcpv6.c
@@ -21,11 +21,12 @@
 #include "ppp.h"
 #include "ipdb.h"
 #include "events.h"
-
-#include "memdebug.h"
+#include "iputils.h"
 
 #include "dhcpv6.h"
 
+#include "memdebug.h"
+
 #define BUF_SIZE 65536
 #define MAX_DNS_COUNT 3
 
@@ -295,6 +296,18 @@ static void dhcpv6_send_reply(struct dhcpv6_packet *req, struct dhcpv6_pd *pd, i
 
 					ia_addr->pref_lifetime = htonl(conf_pref_lifetime);
 					ia_addr->valid_lifetime = htonl(conf_valid_lifetime);
+
+					if (a->installed) {
+						if (a->prefix_len > 64)
+							ip6route_add(ses->ifindex, &a->addr, a->prefix_len, 0);
+						else {
+							struct in6_addr addr;
+							memcpy(addr.s6_addr, &a->addr, 8);
+							memcpy(addr.s6_addr + 8, &ses->ipv6->intf_id, 8);
+							ip6addr_add(ses->ifindex, &addr, a->prefix_len);
+						}
+						a->installed = 1;
+					}
 				}
 
 				list_for_each_entry(opt2, &opt->opt_list, entry) {
diff --git a/accel-pppd/ipv6/nd.c b/accel-pppd/ipv6/nd.c
index 1241380..19a3d7d 100644
--- a/accel-pppd/ipv6/nd.c
+++ b/accel-pppd/ipv6/nd.c
@@ -17,6 +17,7 @@
 #include "events.h"
 #include "mempool.h"
 #include "ipdb.h"
+#include "iputils.h"
 
 #include "memdebug.h"
 
@@ -104,12 +105,12 @@ static void ipv6_nd_send_ra(struct ipv6_nd_handler_t *h, struct sockaddr_in6 *ad
 	//struct nd_opt_mtu *mtu;
 	struct ipv6db_addr_t *a;
 	int i;
-	
+
 	if (!buf) {
 		log_emerg("out of memory\n");
 		return;
 	}
-	
+
 	if (!h->ses->ipv6) {
 		triton_timer_del(&h->timer);
 		return;
@@ -119,12 +120,12 @@ static void ipv6_nd_send_ra(struct ipv6_nd_handler_t *h, struct sockaddr_in6 *ad
 	adv->nd_ra_type = ND_ROUTER_ADVERT;
 	adv->nd_ra_curhoplimit = conf_AdvCurHopLimit;
 	adv->nd_ra_router_lifetime = htons(conf_AdvDefaultLifetime);
-	adv->nd_ra_flags_reserved = 
+	adv->nd_ra_flags_reserved =
 		(conf_AdvManagedFlag ? ND_RA_FLAG_MANAGED : 0) |
 		(conf_AdvOtherConfigFlag ? ND_RA_FLAG_OTHER : 0);
 	adv->nd_ra_reachable = htonl(conf_AdvReachableTime);
 	adv->nd_ra_retransmit = htonl(conf_AdvRetransTimer);
-	
+
 	pinfo = (struct nd_opt_prefix_info *)(adv + 1);
 	list_for_each_entry(a, &h->ses->ipv6->addr_list, entry) {
 		memset(pinfo, 0, sizeof(*pinfo));
@@ -137,8 +138,16 @@ static void ipv6_nd_send_ra(struct ipv6_nd_handler_t *h, struct sockaddr_in6 *ad
 		pinfo->nd_opt_pi_preferred_time = htonl(conf_AdvPrefixPreferredLifetime);
 		memcpy(&pinfo->nd_opt_pi_prefix, &a->addr, 8);
 		pinfo++;
+
+		if (!a->installed) {
+			struct in6_addr addr;
+			memcpy(addr.s6_addr, &a->addr, 8);
+			memcpy(addr.s6_addr + 8, &h->ses->ipv6->intf_id, 8);
+			ip6addr_add(h->ses->ifindex, &addr, a->prefix_len);
+			a->installed = 1;
+		}
 	}
-	
+
 	/*rinfo = (struct nd_opt_route_info_local *)pinfo;
 	list_for_each_entry(a, &h->ses->ipv6->route_list, entry) {
 		memset(rinfo, 0, sizeof(*rinfo));
@@ -163,7 +172,7 @@ static void ipv6_nd_send_ra(struct ipv6_nd_handler_t *h, struct sockaddr_in6 *ad
 		}
 	} else
 		rdnss_addr = (struct in6_addr *)pinfo;
-	
+
 	if (conf_dnssl) {
 		dnsslinfo = (struct nd_opt_dnssl_info_local *)rdnss_addr;
 		memset(dnsslinfo, 0, sizeof(*dnsslinfo));
@@ -190,7 +199,7 @@ static void send_ra_timer(struct triton_timer_t *t)
 	addr.sin6_family = AF_INET6;
 	addr.sin6_addr.s6_addr32[0] = htonl(0xff020000);
 	addr.sin6_addr.s6_addr32[3] = htonl(0x1);
-	addr.sin6_scope_id = h->ses->ifindex; 
+	addr.sin6_scope_id = h->ses->ifindex;
 
 	if (h->ra_sent == conf_init_ra) {
 		h->timer.period = conf_MaxRtrAdvInterval * 1000;
@@ -261,7 +270,7 @@ static int ipv6_nd_start(struct ap_session *ses)
 	struct ipv6_nd_handler_t *h;
 
 	sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
-	
+
 	if (sock < 0) {
 		log_ppp_error("socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6): %s\n", strerror(errno));
 		return -1;
@@ -283,7 +292,7 @@ static int ipv6_nd_start(struct ap_session *ses)
 		log_ppp_error("ipv6_nd: setsockopt(IPV6_UNICAST_HOPS): %s\n", strerror(errno));
 		goto out_err;
 	}
-	
+
 	if (setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &val, sizeof(val))) {
 		log_ppp_error("ipv6_nd: setsockopt(IPV6_MULTICAST_HOPS): %s\n", strerror(errno));
 		goto out_err;
@@ -372,14 +381,14 @@ static void ev_ses_finishing(struct ap_session *ses)
 
 	if (!h)
 		return;
-	
+
 	if (h->timer.tpd)
 		triton_timer_del(&h->timer);
 
 	triton_md_unregister_handler(&h->hnd, 1);
 
 	list_del(&h->pd.entry);
-	
+
 	_free(h);
 }
 
@@ -393,19 +402,19 @@ static void add_dnssl(const char *val)
 		n++;
 	else
 		n += 2;
-	
+
 	if (n > 255) {
 		log_error("dnsv6: dnssl '%s' is too long\n", val);
 		return;
 	}
-	
+
 	if (!conf_dnssl)
 		conf_dnssl = _malloc(n);
 	else
 		conf_dnssl = _realloc(conf_dnssl, conf_dnssl_size + n);
-	
+
 	buf = conf_dnssl + conf_dnssl_size;
-	
+
 	while (1) {
 		ptr = strchr(val, '.');
 		if (!ptr)
@@ -423,7 +432,7 @@ static void add_dnssl(const char *val)
 				break;
 		}
 	}
-	
+
 	conf_dnssl_size += n;
 }
 
@@ -431,12 +440,12 @@ static void load_dns(void)
 {
 	struct conf_sect_t *s = conf_get_section("ipv6-dns");
 	struct conf_option_t *opt;
-	
+
 	if (!s)
 		return;
-	
+
 	conf_dns_count = 0;
-	
+
 	if (conf_dnssl)
 		_free(conf_dnssl);
 	conf_dnssl = NULL;
@@ -447,7 +456,7 @@ static void load_dns(void)
 			add_dnssl(opt->val);
 			continue;
 		}
-		
+
 		if (!strcmp(opt->name, "lifetime")) {
 			conf_rdnss_lifetime = atoi(opt->val);
 			continue;
@@ -473,10 +482,10 @@ static void load_config(void)
 	opt = conf_get_opt("ipv6-nd", "MaxRtrAdvInterval");
 	if (opt)
 		conf_MaxRtrAdvInterval = atoi(opt);
-	
+
 	conf_MinRtrAdvInterval = 0.33 * conf_MaxRtrAdvInterval;
 	conf_AdvDefaultLifetime = 3 * conf_MaxRtrAdvInterval;
-	
+
 	conf_AdvManagedFlag = triton_module_loaded("ipv6_dhcp");
 	conf_AdvOtherConfigFlag = triton_module_loaded("ipv6_dhcp");
 	conf_AdvPrefixAutonomousFlag = !conf_AdvManagedFlag;
@@ -532,7 +541,7 @@ static void load_config(void)
 	opt = conf_get_opt("ipv6-nd", "AdvAutonomousFlag");
 	if (opt)
 		conf_AdvPrefixAutonomousFlag = atoi(opt);
-	
+
 	load_dns();
 }
 
@@ -541,7 +550,7 @@ static void init(void)
 	buf_pool = mempool_create(BUF_SIZE);
 
 	load_config();
-	
+
 	triton_event_register_handler(EV_CONFIG_RELOAD, (triton_event_func)load_config);
 	triton_event_register_handler(EV_SES_STARTED, (triton_event_func)ev_ses_started);
 	triton_event_register_handler(EV_SES_FINISHING, (triton_event_func)ev_ses_finishing);
diff --git a/accel-pppd/libnetlink/iputils.c b/accel-pppd/libnetlink/iputils.c
index fb85973..480f028 100644
--- a/accel-pppd/libnetlink/iputils.c
+++ b/accel-pppd/libnetlink/iputils.c
@@ -39,7 +39,7 @@ static void open_rth(void)
 
 	if (!rth)
 		return;
-	
+
 	memset(rth, 0, sizeof(*rth));
 
 	if (rtnl_open(rth, 0)) {
@@ -78,7 +78,7 @@ static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n, void *
 
 	if (tb[IFLA_IFNAME] == NULL)
 		return 0;
-	
+
 	//printf("%i %s\n", ifi->ifi_index, RTA_DATA(tb[IFLA_IFNAME]));
 
 	return a->func(ifi->ifi_index, ifi->ifi_flags, RTA_DATA(tb[IFLA_IFNAME]), a->arg);
@@ -127,12 +127,12 @@ int __export iplink_get_stats(int ifindex, struct rtnl_link_stats *stats)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
 	req.n.nlmsg_type = RTM_GETLINK;
@@ -158,10 +158,10 @@ int __export iplink_get_stats(int ifindex, struct rtnl_link_stats *stats)
 		memcpy(stats, RTA_DATA(tb[IFLA_STATS]), sizeof(*stats));
 	else
 		return -1;
-	
+
 	return 0;
 }
-	
+
 int __export iplink_vlan_add(const char *ifname, int ifindex, int vid)
 {
 	struct iplink_req {
@@ -173,20 +173,20 @@ int __export iplink_vlan_add(const char *ifname, int ifindex, int vid)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_CREATE | NLM_F_EXCL;
 	req.n.nlmsg_type = RTM_NEWLINK;
 	req.i.ifi_family = AF_UNSPEC;
-	
+
 	addattr_l(&req.n, 4096, IFLA_LINK, &ifindex, 4);
 	addattr_l(&req.n, 4096, IFLA_IFNAME, ifname, strlen(ifname));
-	
+
 	linkinfo = NLMSG_TAIL(&req.n);
 	addattr_l(&req.n, 4096, IFLA_LINKINFO, NULL, 0);
 	addattr_l(&req.n, 4096, IFLA_INFO_KIND, "vlan", 4);
@@ -195,12 +195,12 @@ int __export iplink_vlan_add(const char *ifname, int ifindex, int vid)
 	addattr_l(&req.n, 4096, IFLA_INFO_DATA, NULL, 0);
 	addattr_l(&req.n, 4096, IFLA_VLAN_ID, &vid, 2);
 	data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
-	
+
 	linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 }
 
@@ -215,18 +215,18 @@ int __export iplink_vlan_del(int ifindex)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
 	req.n.nlmsg_type = RTM_DELLINK;
 	req.i.ifi_family = AF_UNSPEC;
 	req.i.ifi_index = ifindex;
-	
+
 	linkinfo = NLMSG_TAIL(&req.n);
 	addattr_l(&req.n, 4096, IFLA_LINKINFO, NULL, 0);
 	addattr_l(&req.n, 4096, IFLA_INFO_KIND, "vlan", 4);
@@ -234,12 +234,12 @@ int __export iplink_vlan_del(int ifindex)
 	/*data = NLMSG_TAIL(&req.n);
 	addattr_l(&req.n, 4096, IFLA_VLAN_ID, &vid, 2);
 	data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;*/
-	
+
 	linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 }
 
@@ -253,12 +253,12 @@ int __export ipaddr_add(int ifindex, in_addr_t addr, int mask)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
 	req.n.nlmsg_type = RTM_NEWADDR;
@@ -270,7 +270,7 @@ int __export ipaddr_add(int ifindex, in_addr_t addr, int mask)
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 }
 
@@ -284,12 +284,12 @@ int __export ipaddr_del(int ifindex, in_addr_t addr, int mask)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST;
 	req.n.nlmsg_type = RTM_DELADDR;
@@ -301,7 +301,7 @@ int __export ipaddr_del(int ifindex, in_addr_t addr, int mask)
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 }
 
@@ -315,12 +315,12 @@ int __export iproute_add(int ifindex, in_addr_t src, in_addr_t dst, in_addr_t gw
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
 	req.n.nlmsg_type = RTM_NEWROUTE;
@@ -341,7 +341,7 @@ int __export iproute_add(int ifindex, in_addr_t src, in_addr_t dst, in_addr_t gw
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 }
 
@@ -355,12 +355,12 @@ int __export iproute_del(int ifindex, in_addr_t dst, int proto)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
 	req.n.nlmsg_type = RTM_DELROUTE;
@@ -376,7 +376,7 @@ int __export iproute_del(int ifindex, in_addr_t dst, int proto)
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 }
 
@@ -390,12 +390,12 @@ int __export ip6route_add(int ifindex, struct in6_addr *dst, int pref_len, int p
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
 	req.n.nlmsg_type = RTM_NEWROUTE;
@@ -411,11 +411,43 @@ int __export ip6route_add(int ifindex, struct in6_addr *dst, int pref_len, int p
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 
 }
 
+int __export ip6addr_add(int ifindex, struct in6_addr *addr, int prefix_len)
+{
+	struct ipaddr_req {
+		struct nlmsghdr n;
+		struct ifaddrmsg i;
+		char buf[4096];
+	} req;
+
+	if (!rth)
+		open_rth();
+
+	if (!rth)
+		return -1;
+
+	memset(&req, 0, sizeof(req) - 4096);
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
+	req.n.nlmsg_type = RTM_NEWADDR;
+	req.i.ifa_family = AF_INET6;
+	req.i.ifa_index = ifindex;
+	req.i.ifa_prefixlen = prefix_len;
+	req.i.ifa_flags = IFA_F_NODAD;
+
+	addattr_l(&req.n, sizeof(req), IFA_ADDRESS, addr, 16);
+
+	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
+		return -1;
+
+	return 0;
+}
+
 in_addr_t __export iproute_get(in_addr_t dst, in_addr_t *gw)
 {
 	struct ipaddr_req {
@@ -433,12 +465,12 @@ in_addr_t __export iproute_get(in_addr_t dst, in_addr_t *gw)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST;
 	req.n.nlmsg_type = RTM_GETROUTE;
@@ -460,7 +492,7 @@ in_addr_t __export iproute_get(in_addr_t dst, in_addr_t *gw)
 
 	r = NLMSG_DATA(&req.n);
 	len = req.n.nlmsg_len;
-	
+
 	if (req.n.nlmsg_type != RTM_NEWROUTE) {
 		log_error("failed to detect route to server (wrong netlink message type)");
 		goto out;
@@ -473,7 +505,7 @@ in_addr_t __export iproute_get(in_addr_t dst, in_addr_t *gw)
 	}
 
 	parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
-		
+
 	if (tb[RTA_PREFSRC])
 		res = *(uint32_t *)RTA_DATA(tb[RTA_PREFSRC]);
 
@@ -494,12 +526,12 @@ int __export iprule_add(uint32_t addr, int table)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST;
 	req.n.nlmsg_type = RTM_NEWRULE;
@@ -516,7 +548,7 @@ int __export iprule_add(uint32_t addr, int table)
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 }
 
@@ -530,12 +562,12 @@ int __export iprule_del(uint32_t addr, int table)
 
 	if (!rth)
 		open_rth();
-	
+
 	if (!rth)
 		return -1;
 
 	memset(&req, 0, sizeof(req) - 4096);
-	
+
 	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
 	req.n.nlmsg_flags = NLM_F_REQUEST;
 	req.n.nlmsg_type = RTM_DELRULE;
@@ -552,7 +584,7 @@ int __export iprule_del(uint32_t addr, int table)
 
 	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
 		return -1;
-	
+
 	return 0;
 }
 
diff --git a/accel-pppd/libnetlink/iputils.h b/accel-pppd/libnetlink/iputils.h
index b9a6488..6097627 100644
--- a/accel-pppd/libnetlink/iputils.h
+++ b/accel-pppd/libnetlink/iputils.h
@@ -19,6 +19,7 @@ int iproute_del(int ifindex, in_addr_t dst, int proto);
 in_addr_t iproute_get(in_addr_t dst, in_addr_t *gw);
 
 int ip6route_add(int ifindex, struct in6_addr *dst, int prefix_len, int proto);
+int ip6addr_add(int ifindex, struct in6_addr *addr, int prefix_len);
 
 int iprule_add(uint32_t addr, int table);
 int iprule_del(uint32_t addr, int table);