This output shows that you are using nmcli to manage network connections. Network-manager is not part of the Ubuntu Server platform, it is not included in the images Ubuntu provides for s390x, and it is not the recommended tool for configuring vlans and bonds in Ubuntu.
To show that this is a problem with the Ubuntu Server network stack, please reproduce this problem with netplan(5). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1790098 Title: vlan created on bond fails auto activation on updating parent network bond Status in Ubuntu on IBM z Systems: New Status in network-manager package in Ubuntu: New Bug description: Auto activation of Vlan created over network-bond fails if bond is deactivated and reactivated. Contact Information = Abhiram Kulkarni(abhir...@in.ibm.com), Mandar Deshpande(manda...@in.ibm.com) ---uname output--- Linux S36MANDAR 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:14:23 UTC 2018 s390x s390x s390x GNU/Linux Machine Type = s390x ---Debugger--- A debugger is not configured ---Steps to Reproduce--- 1. Created a network bond with static IP address (and no IPv6 address); active backup mode; ARP polling; single slave. 2. Created a VLAN using said network bond with static IPv4 address (and no IPv6 address). 3. Can ping from the appliance to a target on both links (the parent bond and the VLAN). 4. Switched to another slave for the created bond 5. Can still ping from the appliance to a target via the parent bond; however, cannot ping to the target via the VLAN. ============================================================================= Detailed steps: 1. Initial setup: ============ root@S36MANDAR:~# nmcli c s NAME UUID TYPE DEVICE enc1a80 c3a2037d-60a3-3cb4-9234-45aed55f7093 ethernet enc1a80 enc8f00 2423add6-1464-3765-877c-a214dc497492 ethernet enc8f00 enc1d40 ff2d70f8-130e-3dc6-ab24-1dba07563605 ethernet -- 2. Create Netwrok-bond with one slave: ================================ root@S36MANDAR:~# nmcli c add type bond con-name mybond1 ifname mybond1 ipv4.method disabled ipv6.method ignore Connection 'mybond1' (4b918a65-43a6-4ec3-b3c4-388ed52b116d) successfully added. root@S36MANDAR:~# nmcli con add type ethernet ifname enc1d40 master mybond1 Connection 'bond-slave-enc1d40' (cfe4b245-3dda-4f45-b7b4-6d40d144a02f) successfully added. root@S36MANDAR:~# nmcli con up bond-slave-enc1d40 Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/18) root@S36MANDAR:~# nmcli c s NAME UUID TYPE DEVICE bond-slave-enc1d40 cfe4b245-3dda-4f45-b7b4-6d40d144a02f ethernet enc1d40 enc1a80 c3a2037d-60a3-3cb4-9234-45aed55f7093 ethernet enc1a80 enc8f00 2423add6-1464-3765-877c-a214dc497492 ethernet enc8f00 mybond1 4b918a65-43a6-4ec3-b3c4-388ed52b116d bond mybond1 enc1d40 ff2d70f8-130e-3dc6-ab24-1dba07563605 ethernet -- 3. Create vlan over mybond1: ======================= root@S36MANDAR:~# nmcli con add type vlan con-name vlanbond.100 ifname vlanbond.100 dev mybond1 id 100 ipv4.method disabled ipv6.method ignore Connection 'vlanbond.100' (e054df42-97a0-492b-b2c9-b9571077493e) successfully added. root@S36MANDAR:~# nmcli c s NAME UUID TYPE DEVICE bond-slave-enc1d40 cfe4b245-3dda-4f45-b7b4-6d40d144a02f ethernet enc1d40 enc1a80 c3a2037d-60a3-3cb4-9234-45aed55f7093 ethernet enc1a80 enc8f00 2423add6-1464-3765-877c-a214dc497492 ethernet enc8f00 mybond1 4b918a65-43a6-4ec3-b3c4-388ed52b116d bond mybond1 vlanbond.100 e054df42-97a0-492b-b2c9-b9571077493e vlan vlanbond.100 enc1d40 ff2d70f8-130e-3dc6-ab24-1dba07563605 ethernet -- 4. Reactivate bond : ================= root@S36MANDAR:~# nmcli con up mybond1 Connection successfully activated (master waiting for slaves) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/30) root@S36MANDAR:~# nmcli c s NAME UUID TYPE DEVICE enc1a80 c3a2037d-60a3-3cb4-9234-45aed55f7093 ethernet enc1a80 enc1d40 ff2d70f8-130e-3dc6-ab24-1dba07563605 ethernet enc1d40 enc8f00 2423add6-1464-3765-877c-a214dc497492 ethernet enc8f00 mybond1 4b918a65-43a6-4ec3-b3c4-388ed52b116d bond mybond1 bond-slave-enc1d40 cfe4b245-3dda-4f45-b7b4-6d40d144a02f ethernet -- encw1810 4ddeb38e-d5f7-3814-abb7-be50b8da874e ethernet -- vlanbond.100 e054df42-97a0-492b-b2c9-b9571077493e vlan -- As is seen, vlan(vlanbond.100) did not get activated Now, if manually I make vlan connection up, it gets activated: root@S36MANDAR:~# nmcli con up vlanbond.100 NAME UUID TYPE DEVICE bond-slave-enc1d40 cfe4b245-3dda-4f45-b7b4-6d40d144a02f ethernet enc1d40 enc1a80 c3a2037d-60a3-3cb4-9234-45aed55f7093 ethernet enc1a80 enc8f00 2423add6-1464-3765-877c-a214dc497492 ethernet enc8f00 mybond1 4b918a65-43a6-4ec3-b3c4-388ed52b116d bond mybond1 vlanbond.100 e054df42-97a0-492b-b2c9-b9571077493e vlan vlanbond.100 enc1d40 ff2d70f8-130e-3dc6-ab24-1dba07563605 ethernet -- encw1810 4ddeb38e-d5f7-3814-abb7-be50b8da874e ethernet -- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1790098/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
