Visitor
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1 Message
Invalid MTU 9192 from xfinity for IPv6 (router advertisements?)
I'm trying to set up my IPv6 setup and I keep getting MTU packets of 9192 from Xfinity. Presumably these are router advertisements.
It seems my router learned the address for the gateway anyway, but it seems the upstream equipment might be misconfigured? The MTU of ethernet isn't 9192, so maybe this is the MTU that is supported over DOCSIS? I have my xfinity gateway configured in bridge mode to go directly to my Mikrotik router at home.
XfinityJorge
Official Employee
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2.6K Messages
1 day ago
Here's the detailed steps to direct message us:
• Click "Sign In" if necessary
• Click the "Direct Message" icon (upper right corner of this page)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
• Type your message in the text area near the bottom of the window
• Press Enter to send your message
(edited)
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EG
Expert
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114.2K Messages
7 hours ago
@corentin @XfinityJorge
Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.
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