better docs

diff --git a/newns b/newns
index 6da77278eedc873e0f97babb4ad3367d5b24aff8..a2233fb700b077a6933381f812ed9b5ce89919c7 100755 (executable)
--- a/newns
+++ b/newns
@@ -71,7 +71,15 @@ https://iankelling.org/git/?p=errhandle, set ERRHANDLE_PATH, or put it
 in a directory adjacent to the absolute, resolved directory this file is
 in.
 
-Background: "ip netns new ..." also does a mount namespace, then bind
+Background:
+
+This script does not make the namespace be named like ip does, because
+the naming is not necessary, although it could have with some more
+work. For debugging and joining the namespace with a bash shell, I use
+nsenter -n -m -t $(pgrep PROCESS_IN_NAMESPACE).  Note: if I knew how to
+easily ask systemd what pid a unit has, i would do that.
+
+"ip netns new ..." also does a mount namespace, then bind
 mounts each file/dir in /etc/netns/NS_NAME to /etc/NS_NAME. Note,
 for openvpn having it's own resolv.conf by using it's user script which
 calls resolvconf, this doesn't help much. What we actually want to do is