构造规则
构造规则
目标：2001:db8::1
低 24 位：00:0001
结果：ff02::1:ff00:1
# 规则：ff02::1:ff + 目标低 24 位Python 验证
Python 验证
python -c "import ipaddress as ipa; a=int(ipa.IPv6Address('2001:db8::1')); print(ipa.IPv6Address((0xff02<<112)|(0x0001<<32)|(0xff00<<16)|(a & 0xffffff)))"
# ff02::1:ff00:1