kernel-netlink: Fix compilation on old kernels not defining IFA_F_NODAD

Fixes #2490.

diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
index a21d0ae7f10aaf19236bc23a8f9c44d94da317b1..e4ded3225235c38dedfcb7e3e1a8d79520bba8a5 100644 (file)
--- a/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
+++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
@@ -2333,7 +2333,9 @@ static status_t manage_ipaddr(private_kernel_netlink_net_t *this, int nlmsg_type
 
        if (ip->get_family(ip) == AF_INET6)
        {
+#ifdef IFA_F_NODAD
                msg->ifa_flags |= IFA_F_NODAD;
+#endif
                if (this->rta_prefsrc_for_ipv6)
                {
                        /* if source routes are possible we let the virtual IP get