*: explicitly print "exit" at the end of every node config

There is a possibility that the same line can be matched as a command in
some node and its parent node. In this case, when reading the config,
this line is always executed as a command of the child node.

For example, with the following config:
```
router ospf
 network 193.168.0.0/16 area 0
!
mpls ldp
 discovery hello interval 111
!
```
Line `mpls ldp` is processed as command `mpls ldp-sync` inside the
`router ospf` node. This leads to a complete loss of `mpls ldp` node
configuration.

To eliminate this issue and all possible similar issues, let's print an
explicit "exit" at the end of every node config.

This commit also changes indentation for a couple of existing exit
commands so that all existing commands are on the same level as their
corresponding node-entering commands.

Fixes #9206.

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/zebra/zebra_srv6_vty.c b/zebra/zebra_srv6_vty.c
index 97935f126e..d2b91b6c07 100644
--- a/zebra/zebra_srv6_vty.c
+++ b/zebra/zebra_srv6_vty.c
@@ -320,10 +320,14 @@ static int zebra_sr_config(struct vty *vty)
 			vty_out(vty, "   locator %s\n", locator->name);
 			vty_out(vty, "    prefix %s/%u\n", str,
 				locator->prefix.prefixlen);
+			vty_out(vty, "   exit\n");
 			vty_out(vty, "   !\n");
 		}
+		vty_out(vty, "  exit\n");
 		vty_out(vty, "  !\n");
+		vty_out(vty, " exit\n");
 		vty_out(vty, " !\n");
+		vty_out(vty, "exit\n");
 		vty_out(vty, "!\n");
 	}
 	return 0;