Sending packets to private IP addressen

[stakeworks]

Why does datahighway-collator sends packets to private IP-addresses despite

--no-private-ipv4
--listen-addr /ip4/xxx
--listen-addr /ip6/xxx

The datahighway-collator creates an instance for every private IP address
2023-03-09 16:05:48 [Parachain] creating instance on iface 172.xx.x.x (docker)
2023-03-09 16:05:48 [Parachain] creating instance on iface 172.xx.x.x (docker)
2023-03-09 16:05:48 [Parachain] creating instance on iface 172.xx.x.x (docker)
2023-03-09 16:05:48 [Parachain] creating instance on iface 172.xx.x.x (wireguard)

But only sends packet to one private IP address:
2023-03-09 16:05:48 [Relaychain] error sending packet on iface 172.xx.x.1: Required key not available (os error 126) (wireguard)
2023-03-09 16:05:48 [Parachain] error sending packet on iface 172.xx.x.1: Required key not available (os error 126) (wireguard)

Version: datahighway-v3.8.1
Ubuntu: 22.04 LTS