[Bug 1876020] [NEW] Old IP does not go away

[Launchpad Bug Tracker]

You have been subscribed to a public bug:

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.

** Affects: netplan.io (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
Old IP does not go away
https://bugs.launchpad.net/bugs/1876020
You received this bug notification because you are a member of Ubuntu Foundations Bugs, which is subscribed to netplan.io in Ubuntu.