Merge pull request #6910 from ssahani/issue-6359

networkd: For IPv6 addresses do not treat IFA_F_DEPRECATED as not ready. (Fix #6359)

src/network/networkd-address.c

@@ -979,7 +979,10 @@ int config_parse_address_scope(const char *unit,
 bool address_is_ready(const Address *a) {
         assert(a);
 
-        return !(a->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED));
+        if (a->family == AF_INET6)
+                return !(a->flags & IFA_F_TENTATIVE);
+        else
+                return !(a->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED));
 }
 
 int config_parse_router_preference(const char *unit,

src/network/networkd-ndisc.c

@@ -185,6 +185,10 @@ static void ndisc_router_process_autonomous_prefix(Link *link, sd_ndisc_router *
                 return;
         }
 
+        /* The preferred lifetime is never greater than the valid lifetime */
+        if (lifetime_preferred > lifetime_valid)
+                return;
+
         r = address_new(&address);
         if (r < 0) {
                 log_link_error_errno(link, r, "Could not allocate address: %m");