久しぶりにWindowsXPでWireSharkでキャプチャーしようとしたら、なんと、PPPやdialupが選択できないではないか！！
色々調べてみると、WinPcapに原因があるようだ
最近のWireShark(1.2.6/1.3.3)や、NMAP(5.21)をインストールするとWinPcap4.xもインストールされるが、
dialupアダプタをサポートしているのはWinPcap3.xらしい。
しかし、WinPcap3.xに含まれるNetMonInstaller.exe をインストールするとこの問題は解消される。
インストールは『NetMonInstaller.exe i 』すれば良い。
と、勝手に解釈してやってみたら動くようになった。
http://www.winpcap.org/misc/faq.htm#Q-25
Q-25: I'm trying to capture from my dialup(PPP) connection with WinPcap 3.1beta, but I cannot (capture from)/see any PPP adapter. What's the problem (this information applies to 2000/XP/2003 only)? A: First of all, WinPcap 3.1 uses the Microsoft NetMon driver to capture from dialup and VPN connection. This driver is installed automatically with the WinPcap setup. You can see this driver by looking at the properties of each network card or dialup connection (tab "General" or "Networking", depending on the adapter, it's listed as "Network Monitor Driver"). If you have accidentally removed this driver from your machine, you can reinstall it by issuing the following command (with administrator privileges) from the WinPcap installation folder, which is \Program Files\WinPcap: NetMonInstaller.exe i Secondly, in order to capture, you must have "Power Users" or "Administrators" privileges on Windows 2000 and XP, and "Power Users + Network Configuration Operations" or "Administrators" privileges on Windows Server 2003. If you do not have such privileges, WinPcap 3.1beta will list such adapters, but you won't be able to open them (with pcap_openXXX or PacketOpenAdapter).
