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bugsmanagement

Member

Registered: 2017-04-21

Posts: 201

[SOLVED] NetworkManager 1.6.2-3, unable to activate bridge connections

Hello,

I am having trouble activating a bridge connection with NetworkManager 1.6.2-3. Using default settings, following https://wiki.archlinux.org/index.php/Network_bridge guide, and when I run nmcli con up <uuid>. It returns with

Error: Connection activation failed: Can not find a master for bridge0: Master connection not found or invalid

.

Steps to reproduce:

1. Create a new connection type bridge via nm-applet

2. Leave everything at default. Add bridge connection type Ethernet

3. Leave everything at default. Select device you want to bridge

4. Save, then Save close Bridge configuraiton window

5. nmcli connection

6. nmcli con up <uuid> #slave UUID

NetworkManager connection configuration:

[connection]
id=bridge0
uuid=da3b3b2b-cf96-4682-a840-2fcfaf20234c
type=ethernet
interface-name=enp4s0
master=bridge0
permissions=
slave-type=bridge

[ethernet]
mac-address=38:D5:47:7B:E4:E7
mac-address-blacklist=

[connection]
id=Bridge connection default
uuid=c4f23602-14c8-4d9a-adf3-3b1f26547be5
type=bridge
interface-name=bridge0
permissions=

[ipv4]
dns-search=
method=auto

[ipv6]
addr-gen-mode=stable-privacy
dns-search=
ip6-privacy=0
method=auto

100% of the time, it fails with:

Error: Connection activation failed: Can not find a master for bridge0: Master connection not found or invalid

.

Questions:

1. Has anyone experience this particular issue?

2. If yes to question one, is there a workaround? Besides using an alternative method, I particularly would like to get this to work with NM

EDIT: Problem fixed, I was missing the "bridge" kernel module, while tackling another approach for the time being. I updated the Kernel, with NetworkManager vague error wording, and no useful error messages in "dmesg", that it didn't occur to me I needed to reboot into the newer kernel.

Last edited by bugsmanagement (2018-10-20 23:48:31)