In case you need these files:

VMware_bootbank_net-r8168_8.013.00-3vmw.510.0.0.799733.vib
VMware_bootbank_net-r8169_6.011.00-2vmw.510.0.0.799733.vib

… to get your Realtek LAN working with ESXi 5.5, get them here:

Public Dropbox