15/09/14 17:16:43.78 .net
たぶん、ここでPCをシャットダウンしたのではないかと思う。（ちゃんとディスコネクト処理されている！）
12:09:05: [L2TP] TUNNEL[] disconnect session 3*8*8 complete
12:09:05: [L2TP] TUNNEL[] disconnecting tunnel 42**7
12:09:05: [L2TP] TUNNEL[] disconnect tunnel 42**7 complete
12:09:05: [IKE] initiate informational exchange (delete)
12:09:05: same message repeated 1 times
12:09:05: IP Tunnel[] Down
12:09:09: [IKE] initiate informational exchange (delete)
12:09:16: [IKE] respond ISAKMP phase to
12:09:17: [IKE] respond IPsec phase to
12:09:17: IP Tunnel[] Up
再び接続しようとしても応答しなかった。
12:13:21: [IKE] initiate informational exchange (delete)
12:30:16: same message repeated 17 times ★怪しい
12:30:23: [IKE] initiate informational exchange (delete)
13:09:13: same message repeated 6 times