Debian Bookworm one host fails to broadcast?

[rgranger]

I have several debian 12 vhosts in proxmox, they wall broadcast their availability fine, but one is being difficult.

I have watched via tcpdump and it will announce itself 4 times then stops. well it sends out below 4 times.

I haven’t seen any crashes in the logs, at least 5 other debian 12 vms work fine

ppbbdeb.mdns > mdns.mcast.net.mdns: 0*- [0q] 4/0/0 ppbbdeb._nomachine._tcp.local. (Cache flush) SRV ppbbdeb.local.:0 0 0, ppbbdeb.local. (Cache flush) A 10.20.10.20, ppbbdeb._nomachine._tcp.local. (Cache flush) TXT "name=ppbbdeb" "uuid=df1564ad-53d8-4588-b56c-8d2b158ffe1e" "type=NoMachine" "port=0" "OS=Debian GNU/Linux 12 (bookworm)" "HW=QEMU Standard PC (i440FX + PIIX 1996)" "mac=bc:24:11:0e:4b:68" "service=nx:4000" "ip=10.20.10.20", _nomachine._tcp.local. PTR ppbbdeb._nomachine._tcp.local. (324)

the other systems send out:
10.20.10.1.mdns > mdns.mcast.net.mdns: 0*- [0q] 2/0/0 mailrelay._nomachine._tcp.local. (Cache flush) TXT "name=mailrelay" "uuid=a9860381-5a4a-4a8f-bf6b-993d0a731f43" "type=NoMachine" "port=0" "OS=Debian GNU/Linux 12 (bookworm)" "HW=QEMU Standard PC (i440FX + PIIX 1996)" "mac=be:42:a6:45:36:bf" "service=nx:4000" "ip=10.20.0.10;fd4b:eddb:2405:9349:5ff5:d693:dcb4:2aea;fd4b:eddb:2405:9349:8b1b:ba90:1a31:bedb;fd4b:eddb:2405:9349:b525:d2b0:67d5:192;fd4b:eddb:2405:9349:a0b0:ddae:31d3:e4eb;fe80::9896:aea9:1307:9575", _nomachine._tcp.local. PTR mailrelay._nomachine._tcp.local. (460)

Free Version 9.1.24
Platform Linux
Display: this a proxmox vm, I have tried setting the display to :3 for a virtual desktop also.
VM: Linux ppbbdeb 6.1.0-37-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.140-1 (2025-05-22) x86_64 GNU/Linux
VM Display Manager: SDDM

Thanks in advance,
Rob Granger

[Author]

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