From 3f3c2a1f66840bee1da05598cf62f299317f483a Mon Sep 17 00:00:00 2001 From: Thomas Mangin Date: Thu, 5 Mar 2020 23:22:39 +0000 Subject: ifconfig: T2104: splt ifconfig.py into multiple files --- python/vyos/ifconfig/loopback.py | 50 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 python/vyos/ifconfig/loopback.py (limited to 'python/vyos/ifconfig/loopback.py') diff --git a/python/vyos/ifconfig/loopback.py b/python/vyos/ifconfig/loopback.py new file mode 100644 index 000000000..410a19dcf --- /dev/null +++ b/python/vyos/ifconfig/loopback.py @@ -0,0 +1,50 @@ +# Copyright 2019 VyOS maintainers and contributors +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library. If not, see . + + +from vyos.ifconfig.interface import Interface + + +class LoopbackIf(Interface): + """ + The loopback device is a special, virtual network interface that your router + uses to communicate with itself. + """ + + default = { + 'type': 'loopback', + } + + def __init__(self, ifname, **kargs): + super().__init__(ifname, **kargs) + + def remove(self): + """ + Loopback interface can not be deleted from operating system. We can + only remove all assigned IP addresses. + + Example: + >>> from vyos.ifconfig import Interface + >>> i = LoopbackIf('lo').remove() + """ + # remove all assigned IP addresses from interface + for addr in self.get_addr(): + if addr in ["127.0.0.1/8", "::1/128"]: + # Do not allow deletion of the default loopback addresses as + # this will cause weird system behavior like snmp/ssh no longer + # operating as expected, see https://phabricator.vyos.net/T2034. + continue + + self.del_addr(addr) -- cgit v1.2.3