Request for assistance with Verizon FIOS connection

Fri Jul 14 15:44:08 UTC 2023

The first thing I would do is to try a different RJ45 cable AND router to rule out your cable or homemade router being the problem. Yes, you’ll have to pick up a cheap router, but any $50 gadget, such as a Mikrotik RB or Ubiquiti ER-X will do. Most network techs have a garage full of castoff routers they can pull out in a pinch.

 -mel beckman

> On Jul 14, 2023, at 8:05 AM, Neil Hanlon <neil at shrug.pw> wrote:
> 
> Hi all - I apoligize for the not-necessarily-on-topic post, but I've been struggling with this issue for the past two
> weeks and am about out of ideas and options other than ask here.
> 
> The short version is I recently got FIOS at my (new) house, and plugged in my router (SFF PC running Vyos). Initially,
> all was fine, however, some time later, connectivity to the gateway given by the DHCP server is completely lost. If I
> force a renewal, the gateway (sometimes) comes back--sometimes not. When it doesn't work, the DHCPDISCOVER process has
> to start over again and I often recive a lease in a completely different subnet--which isn't really the problem, but
> seems to be symptomatic of whatever is happening upstream of me.
> 
> The problem, from my perspective, is that the IPv4 gateway given to me in my DHCP lease goes away before my lease
> expires--leading to broken v4 connectivity until either 1. the system goes to renew the lease and fails, starting over;
> or 2. A watchdog notices and renews the lease (This is what I have attempted to implement, without much success).
> 
> As a note, IPv6 connectivity (dhcpv6-pd, receiving a /56) is entirely unaffected when IPv4 connectivity breaks.
> 
> For the past week, I have been monitoring to various IPv4 and IPv6 endpoints over ICMP and TCP, and have been able to
> chart the outages over that period. More or less, every two hours, shortly after a lease is renewed, the gateway
> disappears. I'm happy to share more details and graphs/logs with anyone who might be able to help.
> 
> I have attempted to contact FIOS support several times and even had a trouble ticket opened at one point--though this
> has been closed as they cannot apparently find any issue with the ONT.
> 
> I'm at my wit's end with this issue and would really appreciate any and all help. Please contact me off list if you need
> additional details--I can provide ticket numbers/conversation IDs/etc, as well as graphs/logs/etc.
> 
> Best,
> Neil Hanlon