<2022-09-10T19:20:50.000Z> josh: Fiberhub is my upstream and colo. Zayo should have their own BGP announcements for me, but I don't think they ever did because they are INSANE.
<2022-09-10T19:21:24.000Z> Mikoyan: So you only have a connection (fiber and BGP) to Fiberhub?
<2022-09-10T19:22:20.000Z> josh: Yes, but Zayo should have set it up themselves and if they did I don't know about it
<2022-09-10T19:22:30.000Z> josh: what's hysterical is I got BGP info for zayo ipv4 and none for ipv6
<2022-09-10T19:22:39.000Z> josh: but I actually discovered on accident I can peer with their IPv6 gateway
<2022-09-10T19:22:44.000Z> josh: they never send that to me, I just guessed
<2022-09-10T19:23:10.000Z> josh: The Ipv4 info they gave me has NEVER worked
<2022-09-10T19:23:31.000Z> Mikoyan: Okay so two things to start with.
<2022-09-10T19:24:16.000Z> Mikoyan: 1: Your move to filter routes you receive (the incantation you were doing on mikrotik, which I'm not a super expert on, that's what it looks like you were doing) will affect your routing table and not what goes out.
<2022-09-10T19:24:57.000Z> Mikoyan: That is to say it impacts traffic going out, not coming from the internet to you.
<2022-09-10T19:26:06.000Z> Mikoyan: 2: What you want to do is stop advertising routes through Zayo. If you only have a BGP session with Fiberhub that may not be possible, unless they have BGP communities to say "I don't want to advertise to this ISP". 
<2022-09-10T19:26:57.000Z> josh: I asked them for a BGP community for peering only with Zayo
<2022-09-10T19:27:01.000Z> Mikoyan: (sorry other way around, ONLY advertise through Zayo)
<2022-09-10T19:27:06.000Z> josh: I've asked various forms of this before but never got a response
<2022-09-10T19:27:13.000Z> josh: this time I nailed the language though I've not gotten a response
<2022-09-10T19:28:28.000Z> Mikoyan: Ah, yeah. Since you're not actually peering direct with these guys you're at the mercy of what Fiberhub can do for you. Unless there's special magic I'm not thinking of. (I work with major ISP peering departments, but I don't do the configs)
<2022-09-10T19:29:06.000Z> Mikoyan: You could also do prepending (repeating your own AS to discourage a route) but that also depends on you peering direct.
<2022-09-10T19:29:48.000Z> josh: that's a thought
<2022-09-10T19:29:49.000Z> josh: I could try that
<2022-09-10T19:30:51.000Z> josh: How would I prepend only for one route
<2022-09-10T19:31:55.000Z> Mikoyan: That's the problem, it also is a per session thing.
<2022-09-10T19:51:36.000Z> Mikoyan: Amusingly the tranny screenshot just posted in the telegram succinctly agrees.