I have the same problem (WOL doesn't work in 11.04)
My Ethernet device:
lspci -k | grep -A 2 Ethernet 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01) Subsystem: ASUSTeK Computer Inc. P5B Kernel driver in use: r8169
I have the same problem (WOL doesn't work in 11.04)
My Ethernet device:
lspci -k | grep -A 2 Ethernet
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
Subsystem: ASUSTeK Computer Inc. P5B
Kernel driver in use: r8169