[Bug 1876020] Re: Old IP does not go away

[Lukas Märdian]

I cannot reproduce this on Focal (netplan.io 0.104-0ubuntu2~20.04.4).
Might have been a side-effect of running a DHCP client in the
background.

Please re-open if you feel this is still an issue.

** Changed in: netplan.io (Ubuntu)
       Status: New => Invalid

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to netplan.io in Ubuntu.
Matching subscriptions: foundations-bugs
https://bugs.launchpad.net/bugs/1876020

Title:
  Old IP does not go away

Status in netplan.io package in Ubuntu:
  Invalid

Bug description:
  Version:

  Description:    Ubuntu 20.04 LTS
  Release:        20.04
  Codename:       focal

  I have changed machine's IP from 192.168.4.55 to 192.168.4.5 in the
  netplan config file:

  leonbrag at minivm:/etc/network$ cat /etc/netplan/00-installer-config.yaml
  # This is the network config written by 'subiquity'
   network:
      version: 2
      renderer: networkd
      ethernets:
         eth0:
            dhcp4: no
            addresses: [192.168.4.5/24]
            gateway4: 192.168.4.1
            nameservers:
               addresses: [192.168.4.1]

  
  However old IP did not go away and machine can be pinged using old IP as well.

  leonbrag at minivm:/etc/network$ ip addr
  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
      inet 127.0.0.1/8 scope host lo
         valid_lft forever preferred_lft forever
      inet6 ::1/128 scope host
         valid_lft forever preferred_lft forever
  2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
      link/ether 00:15:5d:91:c9:00 brd ff:ff:ff:ff:ff:ff
      inet 192.168.4.5/24 brd 192.168.4.255 scope global eth0
         valid_lft forever preferred_lft forever
      inet 192.168.4.55/24 brd 192.168.4.255 scope global secondary noprefixroute eth0
         valid_lft forever preferred_lft forever
      inet6 2601:600:9480:1e4:6b2b:1db2:658b:e692/64 scope global dynamic mngtmpaddr noprefixroute
         valid_lft 2591616sec preferred_lft 604416sec
      inet6 2601:600:9480:1e4:215:5dff:fe91:c900/64 scope global dynamic mngtmpaddr noprefixroute
         valid_lft 2591616sec preferred_lft 604416sec
      inet6 fe80::215:5dff:fe91:c900/64 scope link
         valid_lft forever preferred_lft forever
  leonbrag at minivm:/etc/network$

  machine was rebooted more then once.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/netplan.io/+bug/1876020/+subscriptions