_ [debian] strongswan 変？

charon: 05[KNL] creating acquire job for policy XXX.XXX.XXX.XXX/32[udp/l2f] === AAA.AAA.AAA.AAA/32[udp/l2f] with reqid {1}
charon: 05[CFG] trap not found, unable to acquire reqid 1
xl2tpd[xxxxx]: Disconnecting from AAA.AAA.AAA.AAA, Local: BBBBB, Remote: 0
xl2tpd[xxxxx]: Connection 0 closed to AAA.AAA.AAA.AAA, port CCCCC (Goodbye!)

となって接続できなくなった。strongswan 5.6.1-2 に上げたせいかなと思って 5.6.0-1 に戻したけど変わらず。何が問題だろう？