文件修改
vi /etc/config/dhcp
config dhcp 'lan'
option leasetime '30m' # DHCPv4租约时间
option ra_maxinterval 100 #最长 RA 间隔
option ra_mininterval 30 #最短 RA 间隔
option ra_lifetime 300 # RA 生存时间
option ra_useleasetime 1 # 使用DHCPv4租约时间作为IPv6前缀的首选和有效生命周期的限制 对应valid_time
option preferred_lifetime '10m' # IPv6前缀生存时间 对应preferred_time
命令修改
uci set dhcp.lan.leasetime='2m'
uci set dhcp.lan.ra_useleasetime='1'
uci set dhcp.lan.preferred_lifetime='2m'
uci set dhcp.lan2.leasetime='2m'
uci set dhcp.lan2.ra_useleasetime='1'
uci set dhcp.lan2.preferred_lifetime='2m'