Unable to login after v6 update (getrandom() Error)

I have exact the same issue:

 2025-02-21 20:08:00.655 UTC [58M] ERROR: getrandom() failed in generate_password()
 2025-02-21 20:08:00.655 UTC [58M] ERROR: Failed to generate CLI password hash

Hardware:
Synology DS1517+

  • CPU INTEL Atom C2538 x86 architecture
  • OS Linux version 3.10.108 (root@build7) (gcc version 8.5.0 (GCC) ) #42962 SMP Fri Mar 24 00:28:41 CST 2023

In portainer I have used these for compose:

services:
  pihole:
    image: pihole/pihole
    container_name: pi-hole
    network_mode: host
    security_opt:
      - no-new-privileges:false
    restart: on-failure:5
    volumes:
      - /volume1/docker/pihole/dnsmasq.d:/etc/dnsmasq.d:rw
      - /volume1/docker/pihole/pihole:/etc/pihole:rw
    environment:
      TZ: europe/brussels
      FTLCONF_webserver_api_password: pihole
      FTLCONF_webserver_port: 8181
      FTLCONF_debug_api: 'true'
      DNSMASQ_USER: root # root is required for Synology NAS'ses
      PIHOLE_UID: 1027
      PIHOLE_GID: 101
    cap_add:
      - SYS_TIME
      - SYS_NICE