How to set up a bridge for KVM from an IPIP tunnel?

Question

KVM

Hello!
I've been trying for 2 days to set up the correct bridge from the IPIP Tunnel, but nothing comes out, I ask for your help.
There is a server in the hezner, an IPIP Tunnel is thrown there with the transfer of a white IP address. This server is running Proxmox. Hezner network config:
auto tun0
iface tun0 inet static
address MY_PUBLIC_IP (Rolled IP from first data center)
netmask 255.255.255.248
pointopoint 10.9.1.1
mtu 1350
pre-up /sbin/ip tunnel add tun0 mode ipip remote IP_1_DPC local IP_HEZNER dev eno1
post-up /sbin/ip ru add from MY_PUBLIC_IP lookup 17 priority 17
post-up /sbin/ip ro add default via 10.9.1.1 dev tun0 src MY_PUBLIC_IP table 17 mtu 1350 advmss 1310
pre-down /sbin/ip ro del default via 10.9.1.1 dev tun0 src MY_PUBLIC_IP table 17 mtu 1350 advmss 1310 pre
-down /sbin/ip ru del from MY_PUBLIC_IP lookup 17 priority 17
post-down /sbin/ip tunnel del tun0
configure the bridge so that I can use MY_PUBLIC_IP/29 on newly created VPS that are routed from the first server.
How to organize it correctly in proxmox?