}
if (link_ipv6_enabled(link)) {
+ uint8_t ipv6ll_mode;
+
r = sd_netlink_message_open_container(req, IFLA_AF_SPEC);
if (r < 0)
return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m");
return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m");
}
+ if (!link_ipv6ll_enabled(link))
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE;
+ else if (sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL) < 0)
+ /* The file may not exist. And event if it exists, when stable_secret is unset,
+ * reading the file fails with EIO. */
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64;
+ else
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
+
+ r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m");
+
r = sd_netlink_message_close_container(req);
if (r < 0)
return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m");