[FS#525] Problem with DHCP forwarding / Routed Client with relayd (Pseudobridge)

[LEDE Bugs]

The following task has a new comment added:

FS#525 - Problem with DHCP forwarding / Routed Client with relayd (Pseudobridge)
User who did this - progit (progit)

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Unfortunately, that does not help on my **Gl-Net GL-MT300A**.
Even if relayd running, wifi clients as before can not get IP. On the main router in the syslog many strings
> Wed Feb 22 05:59:40 2017 daemon.info dnsmasq-dhcp[9277]: DHCPOFFER(br-lan)
> Wed Feb 22 05:59:44 2017 daemon.info dnsmasq-dhcp[9277]: DHCPDISCOVER(br-lan) 
> ...

BUGS:
1. relayd not started at bootup
2. If relayd running, if you exec /etc/init.d/network restart. Relayd stopped, not start (missing in running processes)
3. Even if relayed is running, wifi clients can not get IP. The same configuration is successfully worked in the Xiaomi Mi Mini on the latest OpenWRT trunk
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=525#comment1939