Verification-done on bionic: ubuntu@ip-172-30-0-140:/run/systemd/network$ lsb_release -cs bionic ubuntu@ip-172-30-0-140:/run/systemd/network$ dpkg -l netplan.io | grep ii ii netplan.io 0.98-0ubuntu1~18.04.1 amd64 YAML network configuration abstraction for various backends ubuntu@ip-172-30-0-140:/run/systemd/network$ dpkg -l systemd | grep ii ii systemd 237-3ubuntu10.31 amd64 system and service manager ubuntu@ip-172-30-0-140:/run/systemd/network$ cat /etc/netplan/50-cloud-init.yaml # This file is generated from information provided by # the datasource. Changes to it will not persist across an instance. # To disable cloud-init's network configuration capabilities, write a file # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following: # network: {config: disabled} network: version: 2 ethernets: eth0: dhcp4: true match: macaddress: 06:e0:25:2e:08:ef set-name: eth0 ipv6-mtu: 5634 mtu: 6666 dhcp6: true dhcp4-overrides: use-mtu: false dhcp6-overrides: use-mtu: false ubuntu@ip-172-30-0-140:/run/systemd/network$ sudo netplan apply ubuntu@ip-172-30-0-140:/run/systemd/network$ networkctl IDX LINK TYPE OPERATIONAL SETUP 1 lo loopback carrier unmanaged 2 eth0 ether routable configured
2 links listed. ubuntu@ip-172-30-0-140:/run/systemd/network$ sysctl net.ipv6.conf.eth0.mtu net.ipv6.conf.eth0.mtu = 5634 ubuntu@ip-172-30-0-140:/run/systemd/network$ ip link 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 6666 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 06:e0:25:2e:08:ef brd ff:ff:ff:ff:ff:ff ubuntu@ip-172-30-0-140:/run/systemd/network$ ** Tags removed: verification-needed verification-needed-bionic zesty ** Tags added: verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1671951 Title: networkd should allow configuring IPV6 MTU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1671951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs