util: T2226: covert most calls from os.system to util

As little change a possible but the function call
The behaviour should be totally unchanged.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/conf_mode/dhcpv6_relay.py b/src/conf_mode/dhcpv6_relay.py
index d942daf37..a67deb6c7 100755
--- a/src/conf_mode/dhcpv6_relay.py
+++ b/src/conf_mode/dhcpv6_relay.py
@@ -23,6 +23,8 @@ from jinja2 import FileSystemLoader, Environment
 from vyos.config import Config
 from vyos.defaults import directories as vyos_data_dir
 from vyos import ConfigError
+from vyos.util import run
+
 
 config_file = r'/etc/default/isc-dhcpv6-relay'
 
@@ -98,10 +100,10 @@ def generate(relay):
 
 def apply(relay):
     if relay is not None:
-        os.system('sudo systemctl restart isc-dhcpv6-relay.service')
+        run('sudo systemctl restart isc-dhcpv6-relay.service')
     else:
         # DHCPv6 relay support is removed in the commit
-        os.system('sudo systemctl stop isc-dhcpv6-relay.service')
+        run('sudo systemctl stop isc-dhcpv6-relay.service')
         os.unlink(config_file)
 
     return None