我要打开ipv6功能，一般的方法是通过make menuconfig界面打开相应的选项，我只要ipv6功能，所以其他的都去掉了，修改后的.config和原来相比多了以下几项：
CONFIG_IPV6=y

CONFIG_IPV6_PRIVACY is not set

CONFIG_IPV6_ROUTER_PREF is not set

CONFIG_INET6_AH is not set

CONFIG_INET6_ESP is not set

CONFIG_INET6_IPCOMP is not set

CONFIG_INET6_XFRM_MODE_TRANSPORT is not set

CONFIG_INET6_XFRM_MODE_TUNNEL is not set

CONFIG_INET6_XFRM_MODE_BEET is not set

CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set

CONFIG_IPV6_SIT is not set

CONFIG_IPV6_TUNNEL is not set

CONFIG_IPV6_MULTIPLE_TABLES is not set

IPv6: Netfilter Configuration (EXPERIMENTAL)

CONFIG_IP6_NF_QUEUE is not set

CONFIG_IP6_NF_IPTABLES is not set

然后编译内核，可以通过。

但是我觉得其他项都没有打开，写在.config配置文件里比较别扭，然后我就把内核回退到make menuconfig之前的原始状态，在.config里手动只加入一项：CONFIG_IPV6=y，结果编译就通不过了，提示：
scripts/kconfig/conf -s arch/i386/Kconfig
*
*Restart config...
*
*
*Networking options

• Network packet debugging (NETDEBUG) [N/y/?] n Packet socket (PACKET) [Y/n/m/?] y Packet socket: mmapped IO (PACKET_MMAP) [Y/n/?] y Unix domain sockets (UNIX) [Y/n/m/?] y Transformation user configuration interface (XFRM_USER) N/m/y/? aborted!

请问这是怎么回事？手动修改.config之后还要做什么操作吗？