diff --git a/src/network/networkd-ndisc.c b/src/network/networkd-ndisc.c
index 7570d37662..c6ca7f95e2 100644
--- a/src/network/networkd-ndisc.c
+++ b/src/network/networkd-ndisc.c
@@ -448,10 +448,10 @@ static int ndisc_router_process_autonomous_prefix(Link *link, sd_ndisc_router *r
 
 static int ndisc_router_process_onlink_prefix(Link *link, sd_ndisc_router *rt) {
         _cleanup_(route_freep) Route *route = NULL;
+        unsigned prefixlen, preference;
         usec_t timestamp_usec;
         uint32_t lifetime_sec;
         struct in6_addr prefix;
-        unsigned prefixlen;
         int r;
 
         assert(link);
@@ -477,6 +477,11 @@ static int ndisc_router_process_onlink_prefix(Link *link, sd_ndisc_router *rt) {
         if (r < 0)
                 return log_link_warning_errno(link, r, "Failed to get prefix length: %m");
 
+        /* Prefix Information option does not have preference, hence we use the 'main' preference here */
+        r = sd_ndisc_router_get_preference(rt, &preference);
+        if (r < 0)
+                log_link_warning_errno(link, r, "Failed to get default router preference from RA: %m");
+
         r = route_new(&route);
         if (r < 0)
                 return log_oom();
@@ -484,6 +489,7 @@ static int ndisc_router_process_onlink_prefix(Link *link, sd_ndisc_router *rt) {
         route->family = AF_INET6;
         route->dst.in6 = prefix;
         route->dst_prefixlen = prefixlen;
+        route->pref = preference;
         route->lifetime_usec = sec_to_usec(lifetime_sec, timestamp_usec);
 
         r = ndisc_request_route(TAKE_PTR(route), link, rt);
@@ -972,7 +978,7 @@ static int ndisc_router_process_options(Link *link, sd_ndisc_router *rt) {
         }
 }
 
-static int ndisc_drop_outdated(Link *link, usec_t timestamp_usec) {
+static int ndisc_drop_outdated(Link *link, usec_t timestamp_usec, const struct in6_addr *router) {
         bool updated = false;
         NDiscDNSSL *dnssl;
         NDiscRDNSS *rdnss;
@@ -996,6 +1002,9 @@ static int ndisc_drop_outdated(Link *link, usec_t timestamp_usec) {
                 if (route->lifetime_usec >= timestamp_usec)
                         continue; /* the route is still valid */
 
+                if (router && !in6_addr_equal(&route->provider.in6, router))
+                        continue;
+
                 k = route_remove_and_drop(route);
                 if (k < 0)
                         r = log_link_warning_errno(link, k, "Failed to remove outdated SLAAC route, ignoring: %m");
@@ -1008,6 +1017,9 @@ static int ndisc_drop_outdated(Link *link, usec_t timestamp_usec) {
                 if (address->lifetime_valid_usec >= timestamp_usec)
                         continue; /* the address is still valid */
 
+                if (router && !in6_addr_equal(&address->provider.in6, router))
+                        continue;
+
                 k = address_remove_and_drop(address);
                 if (k < 0)
                         r = log_link_warning_errno(link, k, "Failed to remove outdated SLAAC address, ignoring: %m");
@@ -1017,6 +1029,9 @@ static int ndisc_drop_outdated(Link *link, usec_t timestamp_usec) {
                 if (rdnss->lifetime_usec >= timestamp_usec)
                         continue; /* the DNS server is still valid */
 
+                if (router && !in6_addr_equal(&rdnss->router, router))
+                        continue;
+
                 free(set_remove(link->ndisc_rdnss, rdnss));
                 updated = true;
         }
@@ -1025,6 +1040,9 @@ static int ndisc_drop_outdated(Link *link, usec_t timestamp_usec) {
                 if (dnssl->lifetime_usec >= timestamp_usec)
                         continue; /* the DNS domain is still valid */
 
+                if (router && !in6_addr_equal(&dnssl->router, router))
+                        continue;
+
                 free(set_remove(link->ndisc_dnssl, dnssl));
                 updated = true;
         }
@@ -1033,6 +1051,9 @@ static int ndisc_drop_outdated(Link *link, usec_t timestamp_usec) {
                 if (cp->lifetime_usec >= timestamp_usec)
                         continue; /* the captive portal is still valid */
 
+                if (router && !in6_addr_equal(&cp->router, router))
+                        continue;
+
                 ndisc_captive_portal_free(set_remove(link->ndisc_captive_portals, cp));
                 updated = true;
         }
@@ -1053,7 +1074,7 @@ static int ndisc_expire_handler(sd_event_source *s, uint64_t usec, void *userdat
 
         assert_se(sd_event_now(link->manager->event, CLOCK_BOOTTIME, &now_usec) >= 0);
 
-        (void) ndisc_drop_outdated(link, now_usec);
+        (void) ndisc_drop_outdated(link, now_usec, NULL);
         (void) ndisc_setup_expire(link);
         return 0;
 }
@@ -1154,6 +1175,7 @@ static int ndisc_start_dhcp6_client(Link *link, sd_ndisc_router *rt) {
 }
 
 static int ndisc_router_handler(Link *link, sd_ndisc_router *rt) {
+        uint16_t router_lifetime_sec;
         struct in6_addr router;
         usec_t timestamp_usec;
         int r;
@@ -1186,12 +1208,28 @@ static int ndisc_router_handler(Link *link, sd_ndisc_router *rt) {
                 log_link_debug(link, "Received RA without timestamp, ignoring.");
                 return 0;
         }
+
+        r = ndisc_drop_outdated(link, timestamp_usec, NULL);
         if (r < 0)
                 return r;
 
-        r = ndisc_drop_outdated(link, timestamp_usec);
+        r = sd_ndisc_router_get_lifetime(rt, &router_lifetime_sec);
         if (r < 0)
-                return r;
+                return log_link_warning_errno(link, r, "Failed to get lifetime of RA message: %m");
+
+         /* https://datatracker.ietf.org/doc/html/rfc4861
+          * Router Lifetime: A Lifetime of 0 indicates that the router is not a default router
+          * and SHOULD NOT appear on the default router list.
+          */
+        if (router_lifetime_sec == 0) {
+                log_link_debug(link, "Received RA with lifetime = 0, dropping configurations.");
+
+                r = ndisc_drop_outdated(link, USEC_INFINITY, &router);
+                if (r < 0)
+                        log_link_warning_errno(link, r, "Failed to process RA with zero lifetime, ignoring: %m");
+
+                return 0;
+        }
 
         r = ndisc_start_dhcp6_client(link, rt);
         if (r < 0)