The operational command "show dhcpv6 server leases" shows a warning message even if dhcpv6 setting are configured and ipv6 address got assigned to clients.
vyos@server# run sh dhcpv6 server leases WARNING: DHCP6 server is configured but not started. Data may be stale. IPv6 address State Last communication Lease expiration Remaining Type Pool IAID_DUID ------------------------ ------- -------------------- ------------------- ----------- ----------------- ------ ----------------------------------------------------------------- 2001:cafe:1111:1::100 active 2023/04/13 17:34:21 2023/04/13 19:34:21 1:39:24 non-temporary prefix 00:00:00:00:00:04:b0:34:25:53:1d:f8:49:0d:af:87:04:b0:ad:ed:60:20 2001:cafe:1111:1::95 active 2023/04/13 17:37:38 2023/04/13 19:37:38 1:42:41 non-temporary prefix 00:00:00:00:00:04:5f:a2:74:eb:08:be:43:6c:96:8b:19:ac:08:0d:7b:cc 2001:cafe:1111:ffff::/64 active 2023/04/13 17:37:38 2023/04/13 19:37:38 1:42:41 prefix delegation prefix 00:00:00:00:00:04:5f:a2:74:eb:08:be:43:6c:96:8b:19:ac:08:0d:7b:cc
dhcpv6 service status:
vyos@server# sudo service isc-dhcp-server6 status
● isc-dhcp-server6.service - ISC DHCP IPv6 server
Loaded: loaded (/lib/systemd/system/isc-dhcp-server6.service; disabled; pr>
Active: active (running) since Thu 2023-04-13 17:50:21 BST; 2min 30s ago
Docs: man:dhcpd(8)
Process: 4679 ExecStartPre=/bin/sh -ec touch ${LEASE_FILE}; chown nobody:>
Process: 4683 ExecStart=/usr/sbin/dhcpd -6 -q -user dhcpd -group nogroup -p>
Main PID: 4684 (dhcpd)
Tasks: 1 (limit: 1136)
Memory: 4.8M
CPU: 70ms
CGroup: /system.slice/isc-dhcp-server6.service