[Babel-users] volatile routing entries - hop problems?

[Jochen Demmer]

Hi,

I'm building a virtualized mesh network with currently 60 nodes having between 1 and 5 interconnections, mostly 2.
The nodes run OpenWrt 21.02 with babeld 1.10-2. Virtualization is made with Proxmox. All guests use virtio and cpu 'host'.
This is what babeld config looks like:

config general
        option ipv6_subtrees 'true'
        option ubus_bindings 'true'
        option random_id 'true'
        option local_port '33123'
config interface
        option ifname "n300" (I'm using logical names here, it's basically eth2)
        option type "wired"
        option max_rtt_penalty "120"
config interface
        option ifname "n303" (I'm using logical names here, it's basically eth3)
        option type "wired"
        option max_rtt_penalty "120"
config filter
        option type "redistribute"
        option ip "2001:1234:4321:fff0::/60"
        option eq "60"
        option proto "4"
config filter
        option type "redistribute"
        option ip "fdaf:a989:9abc::/48"
        option eq "48"
        option proto "4"

The problem is that distributed routes come and go. What I observed was a node to have 18 routes tops. Sometimes they fluctuate between 9 and 13.
The nodes themselves have all configured static ULA and they receive a global Prefix via DHCPv6 Prefix Delegation.

What am I doing wrong? I just want all the nodes to distribute their ula and uga routes between each other.

Thank you
Jochen
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