error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key

安裝Oracle，設定引數，執行sysctl -p時，報錯（忽略該錯誤，一樣可以安裝成功）
error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key
error: "net.bridge.bridge-nf-call-iptables" is an unknown key
error: "net.bridge.bridge-nf-call-arptables" is an unknown key
:
3個引數依賴於bridge模組，該模組如果沒有載入則會現上面的輸出錯誤      ------引數不明白……
載入模組即可解決
modprobe bridge
lsmod|grep bridge


參考http://blog.csdn.net/kumu_linux/article/details/8591819