DHCP client wont release/renew apon ether link up event

[MadEngineer]

@faustomorales

Upgrade your routerOs to 5.10 or higher to fix this bug.

What’s new in 5.10 (2011-Dec-09 11:49):

*) snmp - provide extended interface statistics when availabe;
*) dhcpv6 client - use link-scoped multicast address;
*) dhcp client - renew dhcp lease on ethernet link up event;
*) ipv6 gre tunnel added (/interface gre6) supports ip and ipv6 encapsulation;
*) ip gre tunnel supports ipv6 encapsulation;
*) allow setting bigger trafflow cache;
*) improved RB1200 stability when using ether9,ether10;
*) fixed RB1200 stability issues when using crypto hardware acceleration;

http://forum.mikrotik.com/posting.php?mode=quote&f=9&p=337276

That’s great if the DHCP client is running on the ether interface however if the DHCP client is running on a VLAN interface then the DHCP client doesn’t renew.

Without scripting is there a fix for this?

[jarda]

Using short interval for ip assignment? Maybe not the best idea but will work.

[MadEngineer]

That’s not a fix and I don’t have control over the DHCP server as I’m not the service provider

[MadEngineer]

Ticket#201506056600​0311 raised with response.