commit 922b4822043726dedee2b8e5c3729f7b1e856139
Author: Pavel Simerda <psimerda@redhat.com>
Date:   Tue Dec 2 17:45:10 2014 +0100

    ip route: don't assume default route
    
    Just print the help when "ip route del" is called without any other
    arguments.
    
    Resolves:
    
     * https://bugzilla.redhat.com/show_bug.cgi?id=997965
    
    Signed-off-by: Pavel Šimerda <psimerda@redhat.com>

diff --git a/ip/iproute.c b/ip/iproute.c
index c9cf5d6..32847c6 100644
--- a/ip/iproute.c
+++ b/ip/iproute.c
@@ -975,6 +975,9 @@ static int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
 		argc--; argv++;
 	}
 
+	if (!dst_ok)
+		usage();
+
 	if (d || nhs_ok)  {
 		int idx;