From 313d195f3ba9ca6361269c449d04c8804cbaebff Mon Sep 17 00:00:00 2001
From: Lars Kruse <devel@sumpfralle.de>
Date: Mon, 12 Aug 2019 00:40:15 +0200
Subject: [PATCH] Plugin lxc: simplify interface of "lxc_netdev"

---
 plugins/lxc/lxc-multigraph | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/plugins/lxc/lxc-multigraph b/plugins/lxc/lxc-multigraph
index e238d2d0..177c681d 100755
--- a/plugins/lxc/lxc-multigraph
+++ b/plugins/lxc/lxc-multigraph
@@ -132,8 +132,6 @@ function lxc_netdev {
       (egrep '^lxc.net.0.veth.pair' "$lxcpath/$g/config" 2>/dev/null \
          || egrep '^lxc.network.veth.pair' "$lxcpath/$g/config"
       ) | awk '{print $NF;}'
-   else
-      echo unknown
    fi
 }
 
@@ -266,7 +264,7 @@ EOF
    for n in $active_guests
    do
       device=$(lxc_netdev "$n")
-      if [ "$device" = "unknown" ]; then
+      if [ -z "$device" ]; then
          continue
       fi
       bps="U"
@@ -366,7 +364,7 @@ echo "multigraph lxc_net"
 for n in $active_guests
 do
    device=$(lxc_netdev "$n")
-   if [ "$device" = "unknown" ]; then
+   if [ -z "$device" ]; then
       value_up="U"
       value_down="U"
    else