KVM SIP packet loss

[Ernest]

Dear Community,

We are experiencing packet loss on our KVM virtual machine during SIP transmission.
This happens randomly in periods from 0 to 10 seconds we are losing up to 4 packets, on
host machine we detect all packets with tcpdump.
Network interfaces are bridged, this only affects SIP packets, ping packets are all received.

Have any of you had similiar experience, any help would be appreciated

Our settings, if you need anything else, please write.

Proxmox 5.4-6
Virtio
bootdisk: scsi0
cores: 4
memory: 8196
name: SIP
net0: virtio=D6:C9C:AF:50:AD,bridge=vmbr00200,queues=2
numa: 1
onboot: 1
ostype: l26
scsi0: ceph-ssd-rp2:vm-4002-disk-1,size=48G
scsihw: virtio-scsi-pci
smbios1: uuid=41c591da-09e0-4be4-8660-1842a6898675
sockets: 2

 

[Richard]

Dear Community,

We are experiencing packet loss on our KVM virtual machine during SIP transmission.
This happens randomly in periods from 0 to 10 seconds we are losing up to 4 packets, on
host machine we detect all packets with tcpdump.
Network interfaces are bridged, this only affects SIP packets, ping packets are all received.

/QUOTE]

Have you already figured out where the packets get loss? At the bridge?