When deleting or disabling a non-dynamic gateway, if that gateway was set as default then remove the corresponding default route to respect the user's decision. Fixes #6659
(cherry picked from commit 1be1b87b5f9ab8d0a259b888aab08ec6babad568)
Related issues
Bug #6659: Default routes are not being removed after deletion
Added by Jim Pingle over 8 years ago
When deleting or disabling a non-dynamic gateway, if that gateway was set as default then remove the corresponding default route to respect the user's decision. Fixes #6659
(cherry picked from commit 1be1b87b5f9ab8d0a259b888aab08ec6babad568)