参考连接：https://www.136.la/shida/show-251598.html
错误信息：
/opt/EmbedSky/TQ210/Kernel_3.0.8_TQ210_for_Linux_v2.4/net/ipv4/tcp.c:3340: undefined reference to `rt6_lookup‘ net/built-in.o: In function `tcp_nuke_addr‘: /opt/EmbedSky/TQ210/Kernel_3.0.8_TQ210_for_Linux_v2.4/net/ipv4/tcp.c:3363: undefined reference to `in6addr_any‘ make: *** [.tmp_vmlinux1] 错误 1
解决方法：
make menuconfig → Networking support → Networking option → 选择 Network packet filtering framework (Netfilter) → 选择 Network packet filtering debugging ；保存退出，执行 make savefeconfig 保存配置后，重新编辑即可。