dhcp: Add the default route option

Add the default route option for the operation of adding route,
while we set the static route and the mask setting is 0.

For example:
add_routes 32 169 254 169 254 10 209 67 4 0 10 209 67 1

The first route (169.254.169.254/32 via 10.209.67.4) is added successfully,
but the second route (10.209.67.1, default) is not added at all.

Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/recipes-connectivity/dhcp/files/dhclient-exit-hooks b/recipes-connectivity/dhcp/files/dhclient-exit-hooks
index 3be5e02..41bcb08 100644
--- a/recipes-connectivity/dhcp/files/dhclient-exit-hooks
+++ b/recipes-connectivity/dhcp/files/dhclient-exit-hooks
@@ -66,6 +66,9 @@ while [ $# -ne 0 ]; do
   elif [ $mask -gt 8 ]; then
     destination="-net $1.$2.0.0/$mask"
     shift; shift
+  #Add the default route
+  elif [ $mask -eq 0 ]; then
+    destination="default"
   else
     destination="-net $1.0.0.0/$mask"
     shift