linux: set RTF_HOST correctly when reading kernel routes.

Linux has no real concept of host routes, but dhcpcd does purely
for describing them.
As such, mark them has host routes if the netmask if all ones.

diff --git a/src/if-linux.c b/src/if-linux.c
index 3196c9df494315cabb2a0db7746f6cfcad021d52..abd4cd526570062153ea49e28873b7bdd614053d 100644 (file)
--- a/src/if-linux.c
+++ b/src/if-linux.c
@@ -430,8 +430,6 @@ if_copyrt(struct dhcpcd_ctx *ctx, struct rt *rt, struct nlmsghdr *nlm)
        memset(rt, 0, sizeof(*rt));
        if (rtm->rtm_type == RTN_UNREACHABLE)
                rt->rt_flags |= RTF_REJECT;
-       if (rtm->rtm_scope == RT_SCOPE_HOST)
-               rt->rt_flags |= RTF_HOST;
 
        rta = (struct rtattr *)RTM_RTA(rtm);
        len = RTM_PAYLOAD(nlm);
@@ -491,6 +489,8 @@ if_copyrt(struct dhcpcd_ctx *ctx, struct rt *rt, struct nlmsghdr *nlm)
 
        rt->rt_netmask.sa_family = rtm->rtm_family;
        sa_fromprefix(&rt->rt_netmask, rtm->rtm_dst_len);
+       if (sa_is_allones(&rt->rt_netmask))
+               rt->rt_flags |= RTF_HOST;
 
        #if 0
        if (rt->rtp_ifp == NULL && rt->src.s_addr != INADDR_ANY) {