vyos@r14:~$ ls -la /run/vpp
total 8
drwxr-xr-x  2 root vyattacfg  140 Nov 14 13:52 .
drwxr-xr-x 46 root root      1320 Nov 14 13:52 ..
srwxrwxr-x  1 root vpp          0 Nov 14 13:52 api.sock
srwxrwxr-x  1 root vpp          0 Nov 14 13:52 cli.sock
srwxrwxr-x  1 root vpp          0 Nov 14 13:52 stats.sock
-rw-r--r--  1 root vyattacfg 2151 Nov 14 13:52 vpp.conf
-rw-r--r--  1 root vyattacfg  300 Nov 14 13:52 vpp_conf.json
vyos@r14:~$

$ cat interface_address.py 
#!/usr/bin/env python3
from vyos.vpp import VPPControl


def get_all_addresses():
    vpp = VPPControl()
    addresses = []

    for iface in vpp.api.sw_interface_dump():
        sw_if_index = iface.sw_if_index

        # IPv4
        for a in vpp.api.ip_address_dump(sw_if_index=sw_if_index, is_ipv6=False):
            addresses.append(str(a.prefix))

        # IPv6
        for a in vpp.api.ip_address_dump(sw_if_index=sw_if_index, is_ipv6=True):
            addresses.append(str(a.prefix))

    return addresses


if __name__ == "__main__":
    for addr in get_all_addresses():
        print(addr)

vyos@r14:~$ whoami
vyos
vyos@r14:~$ 
vyos@r14:~$ ./interface_address.py
Traceback (most recent call last):
  File "/home/vyos/./interface_address.py", line 24, in <module>
    for addr in get_all_addresses():
                ^^^^^^^^^^^^^^^^^^^
  File "/home/vyos/./interface_address.py", line 6, in get_all_addresses
    vpp = VPPControl()
          ^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/vyos/vpp/control_vpp.py", line 101, in __init__
    self.__vpp_api_client.connect('vpp-vyos')
  File "/usr/lib/python3/dist-packages/vpp_papi/vpp_papi.py", line 655, in connect
    return self.connect_internal(
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/vpp_papi/vpp_papi.py", line 620, in connect_internal
    rv = self.transport.connect(name, pfx, msg_handler, rx_qlen, do_async)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/vpp_papi/vpp_transport_socket.py", line 93, in connect
    raise msg
  File "/usr/lib/python3/dist-packages/vpp_papi/vpp_transport_socket.py", line 90, in connect
    self.socket.connect(self.server_address)
PermissionError: [Errno 13] Permission denied
vyos@r14:~$ 
vyos@r14:~$ 
vyos@r14:~$ sudo ./interface_address.py
192.168.122.14/24
10.0.0.1/30
100.64.21.1/24
vyos@r14:~$