Public bug reported: 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@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@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@minivm:/etc/network$ machine was rebooted more then once. ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876020 Title: Old IP does not go away To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1876020/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs