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#!/usr/bin/env python3
# Delete "set service dhcp-relay relay-options port" option
# Delete "set service dhcpv6-relay listen-port" option
import sys
from vyos.configtree import ConfigTree
if len(sys.argv) < 2:
print("Must specify file name!")
sys.exit(1)
file_name = sys.argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
config = ConfigTree(config_file)
if not (config.exists(['service', 'dhcp-relay', 'relay-options', 'port']) or config.exists(['service', 'dhcpv6-relay', 'listen-port'])):
# Nothing to do
sys.exit(0)
else:
# Delete abandoned node
config.delete(['service', 'dhcp-relay', 'relay-options', 'port'])
# Delete abandoned node
config.delete(['service', 'dhcpv6-relay', 'listen-port'])
try:
with open(file_name, 'w') as f:
f.write(config.to_string())
except OSError as e:
print("Failed to save the modified config: {}".format(e))
sys.exit(1)
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