Vera uses IP address after DHCP Lease has expired

Community Playground General Discussions
1

I could be wrong, but all indications are that my new Vera Lite does not correctly renew its DHCP lease.

My LAN router issues the VeraLite a DHCP lease when it powers up. This lease is good for 60 minutes.
After sixty minutes, the lease has expired, yet the Vera keeps using its assigned IP address.

I see packets going through, ARP updates, etc, but the router has returned the IP address to the pool and dissociated the host name.
So, while I’m able to connect to my hostname for an hour, after that the link no longer works as the hostname is invalid.

Has anyone else seen this? Seems like a violation of expected DHCP client behavior.

In the meantime, how do I configure Vera to never ever use DHCP, have a static address, and never try BOOTP/DHCP again?

Thanks!

(Captcha question: What number is considered unlucky?? That depends on where in the world you are. Sometimes even what religion you come from. Egad… this could take a while.)

2

I think you’re right; Vera isn’t showing up on my list of DHCP leases either. There’s no DHCP client running (udhcpc) on Vera.

You should be able to set a static IP address at Setup > Net & WiFi > Manually Configure.

(The capchas stop once you hit some small number of posts, 1 or 2 dozen. Hang in there!)

3

It’s usually dnsmasq that handles the DHCP client in OpenWRT.
Not sure why dnsmasq in Vera seems buggered up… my other OpenWRT devices are keeping current on their lease.
There’s something… different about this DNS/DHCP setup.

4

No, dnsmasq is only a server (for DHCP and, not relevant to this conversation, DNS).

5

You’re quite right… my mistake.

For now, setting a static IP number and reserving that one on the DHCP server seems to be working.

I’ll ssh in and see if I can figure out where DHCP (Client) gets configured (network.wan.proto and such).

6

Why do you have your lease time set so low?? (60 mins) There’s no reason to do this unless you’re running a busy public hotspot, and even then, you can increase the subnet size and keep the lease time longer.

Try setting your lease time to 24 hours, and then check to see if the dhcp client on Vera has the same behavior.

7

I keep my lease time short, for a number of reasons. It’s a very active network with 30-40 leases issued and a lot of transient clients.

Regardless of Lease duration, it’s the client’s responsibility to renew on schedule.
It’s not acceptable (within spec) for Vera to retain its assignment without renewing. Indeed, none of my other devices (from high-end to micro-scale) do this.
I believe it’s a bug, but will gather more packet evidence before contacting MCV.