Nest: Fix leaking internal attributes in RIP and Babel

During backporting attribute changes from 3.0-branch, some internal
attributes (RIP iface and Babel seqno) leaked to 'show route all' output.
Allow protocols to hide specific attributes with GA_HIDDEN value.

Thanks to Nigel Kukard for the bugreport.

2 files changed, 6 insertions, 3 deletions

diff --git a/proto/babel/babel.c b/proto/babel/babel.c
index 86cec63b..ecde07b3 100644
--- a/proto/babel/babel.c
+++ b/proto/babel/babel.c
@@ -2081,9 +2081,6 @@ babel_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
 {
   switch (a->id)
   {
-  case EA_BABEL_SEQNO:
-    return GA_FULL;
-
   case EA_BABEL_METRIC:
     bsprintf(buf, "metric: %d", a->u.data);
     return GA_FULL;
@@ -2096,6 +2093,9 @@ babel_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
     return GA_FULL;
   }
 
+  case EA_BABEL_SEQNO:
+    return GA_HIDDEN;
+
   default:
     return GA_UNKNOWN;
   }
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index b0b5b8a1..5f3161ee 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -1233,6 +1233,9 @@ rip_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
     bsprintf(buf, "tag: %04x", a->u.data);
     return GA_FULL;
 
+  case EA_RIP_FROM:
+    return GA_HIDDEN;
+
   default:
     return GA_UNKNOWN;
   }