=== mechanism evidence, labsim, 2026-09-06T14:28:11+01:00 ===
--- 172.31.1.252 ---
vip=172.31.1.1 holds_vip=no wan_disabled=yes wan_up=no ppp_up=no ppp_active=no may_dial=no lease_age=- dropin=yes role=backup tun=DOWN radvd=inactive
inactive
tun0@NONE        DOWN           203.0.113.108 <POINTOPOINT,NOARP> 
inactive
Sep 06 13:22:01 apitest he-tunnel-follow[544377]: role is now backup
--- 172.31.1.253 ---
vip=172.31.1.1 holds_vip=yes wan_disabled=no wan_up=yes ppp_up=yes ppp_active=yes may_dial=yes lease_age=26 dropin=yes role=master tun=UNKNOWN radvd=active
tun0@NONE        UNKNOWN        198.51.100.137 <POINTOPOINT,NOARP,UP,LOWER_UP> 
active
Sep 06 13:25:01 vyos he-tunnel-follow[596311]: in sync: tun0 via pppoe0 src 198.51.100.137 mtu 1472
Sep 06 13:26:01 vyos he-tunnel-follow[598274]: in sync: tun0 via pppoe0 src 198.51.100.137 mtu 1472
Sep 06 13:27:01 vyos he-tunnel-follow[599393]: in sync: tun0 via pppoe0 src 198.51.100.137 mtu 1472
Sep 06 13:28:01 vyos he-tunnel-follow[600596]: in sync: tun0 via pppoe0 src 198.51.100.137 mtu 1472
--- HE endpoint ---
  HE address : 192.0.2.10/32
  he-sim     : he-sim: ipv6/ip remote 198.51.100.137 local 192.0.2.10 ttl 64 6rd-prefix 2002::/16
  he-sim v6  : 2001:db8:1f1c:f6::1/64
  API        : running
  API bound  : nohost
  API calls  : 5
  route back : 198.51.100.0/24 via 192.168.122.63 dev eth1 
