STM32F107 I2C2 not clocking the SCL line.

Is there an alternate function that needs to be disabled for this to work by default? The datasheet footnote says "SPI2/I2S2 and I2C2 are not available when the Ethernet is being used."

Is the Ethernet enabled by default and how do I disable it or properly configure the I2C2 port on pins PB10 and PB11?