metronet fiber, internet goes down roughly every 24 hours
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Yeah I bet it is that issue. The only way to be sure there is to packet capture the DHCP requests
and check that unicast packets are being ignored but broadcasts see responses. -
@stephenw10 The solution posted in that forum post - do you think a note can be added in the documentation?
"Turn gateway monitoring back on. Your issue is not with that. It's with Metronet DHCP relays not responding to unicast renewals, the logs just confirm my suspicions. Perform the following. Goto interfaces > WAN and under DHCP client configuration check the box "Advanced configuration" and under presets select FreeBSD default. Then further down under Lease requirements and requests in the box "Option Modifiers" enter the following supersede dhcp-server-identifier 255.255.255.255
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Yes, something needs to be added there. At the very least it needs more eyes to assess whether or not what they are doing can ever be valid. And if it is what we could/should be doing to address that. Let me open a ticket....
Actually that dhclient option was added specifically to address this issue:
https://redmine.pfsense.org/issues/7416Mmm, not sure where I'd expect a note in the docs to be. In the config override section here maybe?
https://docs.netgate.com/pfsense/en/latest/interfaces/configure-ipv4.html#dhcp -
Believe you are 100% correct here. I didn't reproduce my symptom, but feel like manually restarting the interface proves what's happening.
In the packet captures, when source is my IP only DHCP Request packets get sent out with no DHCK ACK's (I saw these when I left packet capture going overnight). When source is 0.0.0.0 and destination is 255.255.255.255 I get DHCP ACK's back (saw this when manually restarting the WAN interface)
Your help is much appreciated.
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Yes, that sounds very much like you're hitting that issue. Try setting the supersede option and see if it returns.
