Configure IPv6 IPsec peer and try to reset
VyOS config:
```
set vpn ipsec esp-group grp-ESP compression 'disable'
set vpn ipsec esp-group grp-ESP lifetime '28800'
set vpn ipsec esp-group grp-ESP mode 'tunnel'
set vpn ipsec esp-group grp-ESP pfs 'enable'
set vpn ipsec esp-group grp-ESP proposal 10 encryption 'aes256gcm128'
set vpn ipsec esp-group grp-ESP proposal 10 hash 'sha256'
set vpn ipsec ike-group grp-IKE dead-peer-detection action 'hold'
set vpn ipsec ike-group grp-IKE dead-peer-detection interval '30'
set vpn ipsec ike-group grp-IKE dead-peer-detection timeout '120'
set vpn ipsec ike-group grp-IKE ikev2-reauth 'no'
set vpn ipsec ike-group grp-IKE key-exchange 'ikev2'
set vpn ipsec ike-group grp-IKE lifetime '86400'
set vpn ipsec ike-group grp-IKE mobike 'disable'
set vpn ipsec ike-group grp-IKE proposal 10 dh-group '14'
set vpn ipsec ike-group grp-IKE proposal 10 encryption 'aes256gcm128'
set vpn ipsec ike-group grp-IKE proposal 10 hash 'sha256'
set vpn ipsec interface 'eth1'
set vpn ipsec site-to-site peer 2001:db8::2 authentication id '2001:db8::1'
set vpn ipsec site-to-site peer 2001:db8::2 authentication mode 'pre-shared-secret'
set vpn ipsec site-to-site peer 2001:db8::2 authentication pre-shared-secret 'SSSeeccRetT'
set vpn ipsec site-to-site peer 2001:db8::2 authentication remote-id '2001:db8::2'
set vpn ipsec site-to-site peer 2001:db8::2 connection-type 'initiate'
set vpn ipsec site-to-site peer 2001:db8::2 ike-group 'grp-IKE'
set vpn ipsec site-to-site peer 2001:db8::2 ikev2-reauth 'inherit'
set vpn ipsec site-to-site peer 2001:db8::2 local-address '2001:db8::1'
set vpn ipsec site-to-site peer 2001:db8::2 tunnel 0 esp-group 'grp-ESP'
set vpn ipsec site-to-site peer 2001:db8::2 tunnel 0 local prefix '2001:db8:1111::/64'
set vpn ipsec site-to-site peer 2001:db8::2 tunnel 0 remote prefix '2001:db8:2222::/64'
```
Reset
```
vyos@r14:~$ reset vpn ipsec-peer
Possible completions:
2001:db8::2 Reset all tunnels for given peer
vyos@r14:~$ reset vpn ipsec-peer 2001:db8::2
Tunnel(s) not found, aborting
vyos@r14:~$
```
Connection:
```
vyos@r14:~$ sudo swanctl -L
peer_2001-db8--2: IKEv2, no reauthentication, rekeying every 86400s, dpd delay 30s
local: 2001:db8::1
remote: 2001:db8::2
local pre-shared key authentication:
id: 2001:db8::1
remote pre-shared key authentication:
id: 2001:db8::2
peer_2001-db8--2_tunnel_0: TUNNEL, rekeying every 3600s, dpd action is hold
local: 2001:db8:1111::/64
remote: 2001:db8:2222::/64
```