Set secondary ip address to vti interface cause interface disable.
To reproduce, initial configuration
set interfaces ethernet eth1 address '2001:db8::2/64' set interfaces ethernet eth1 address '192.0.2.2/30' set interfaces ethernet eth1 ipv6 disable-forwarding set interfaces ethernet eth1 mtu '1540' set interfaces vti vti2 address '10.0.0.2/30' set vpn ipsec esp-group ESP-GRP-VTI compression 'disable' set vpn ipsec esp-group ESP-GRP-VTI lifetime '1800' set vpn ipsec esp-group ESP-GRP-VTI mode 'tunnel' set vpn ipsec esp-group ESP-GRP-VTI pfs 'enable' set vpn ipsec esp-group ESP-GRP-VTI proposal 1 encryption 'aes256' set vpn ipsec esp-group ESP-GRP-VTI proposal 1 hash 'sha1' set vpn ipsec ike-group IKE-GRP-VTI ikev2-reauth 'no' set vpn ipsec ike-group IKE-GRP-VTI key-exchange 'ikev1' set vpn ipsec ike-group IKE-GRP-VTI lifetime '3600' set vpn ipsec ike-group IKE-GRP-VTI proposal 1 dh-group '2' set vpn ipsec ike-group IKE-GRP-VTI proposal 1 encryption 'aes256' set vpn ipsec ike-group IKE-GRP-VTI proposal 1 hash 'sha1' set vpn ipsec interface 'eth1' set vpn ipsec site-to-site peer 192.0.2.1 authentication mode 'pre-shared-secret' set vpn ipsec site-to-site peer 192.0.2.1 authentication pre-shared-secret 'SeCrEt' set vpn ipsec site-to-site peer 192.0.2.1 ike-group 'IKE-GRP-VTI' set vpn ipsec site-to-site peer 192.0.2.1 local-address '192.0.2.2' set vpn ipsec site-to-site peer 192.0.2.1 vti bind 'vti2' set vpn ipsec site-to-site peer 192.0.2.1 vti esp-group 'ESP-GRP-VTI'
Add or remove secondary address to vti2 interface:
vyos@r1-roll:~$ show int vti Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down Interface IP Address S/L Description --------- ---------- --- ----------- vti2 10.0.0.2/30 u/u vyos@r1-roll:~$ conf [edit] vyos@r1-roll# set interfaces vti vti2 address 100.64.222.1/24 [edit] vyos@r1-roll# commit [edit] vyos@r1-roll# run show interfaces vti Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down Interface IP Address S/L Description --------- ---------- --- ----------- vti2 10.0.0.2/30 A/D 100.64.222.1/24