Add to rc.local a check to see if an IP has been obtained. If no setup an 'at' job in the near future to attempt again. Continue scheduling 'at' jobs until an IP is obtained.
The reference dhclient from the ISC should run forever in the default configuration, and it should acquire a lease later if it doesn't get one at startup.
I am using the out of the box dhcp client on FreeBSD, which is derived from OpenBSD's and based on the ISC's dhclient, and this is the out of the box behavior.
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rc.local检查是否已获得IP。 如果没有设置“at”工作，请在不久的将来再次尝试。 继续调度“at”作业，直到获得 IP。Add to
rc.locala check to see if an IP has been obtained. If no setup an 'at' job in the near future to attempt again. Continue scheduling 'at' jobs until an IP is obtained.您有多种选择：
You have several options:
来自 ISC 的参考 dhclient 应在默认配置下永远运行，如果在启动时未获得租约，则应稍后获得租约。
我在 FreeBSD 上使用开箱即用的 dhcp 客户端，它源自 OpenBSD 并基于 ISC 的 dhclient，这是开箱即用的行为。
请参阅 http://www.isc.org/index.pl?/sw/ DHCP/
The reference dhclient from the ISC should run forever in the default configuration, and it should acquire a lease later if it doesn't get one at startup.
I am using the out of the box dhcp client on FreeBSD, which is derived from OpenBSD's and based on the ISC's dhclient, and this is the out of the box behavior.
See http://www.isc.org/index.pl?/sw/dhcp/