nanog mailing list archives
Re: What do you consider acceptable packet / session modification for a network operator?
From: Marco Moock via NANOG <nanog () lists nanog org>
Date: Fri, 26 Dec 2025 17:07:33 +0100
Am 26.12.2025 um 17:47:14 Uhr schrieb Saku Ytti:
You're saying you've never seen an ISP adjust TCP MSS here? I must have misread, because I've never seen an ISP not adjust here.
If that fixes the problem, PMTU discovery (mandatory for IPv6 and IPv4 with DF bit) is broken and that means UDP, IPsec, GRE etc. all fail. The ISPs I used emit ICMP packet too big messages. -- Gruß Marco Send unsolicited bulk mail to 1766767634muell () cartoonies org
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Current thread:
- Re: What do you consider acceptable packet / session modification for a network operator?, (continued)
- Re: What do you consider acceptable packet / session modification for a network operator? andrew--- via NANOG (Dec 25)
- Re: What do you consider acceptable packet / session modification for a network operator? Ca By via NANOG (Dec 25)
- Re: What do you consider acceptable packet / session modification for a network operator? Tim Burke via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Pedro Prado via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Marco Moock via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Pedro Prado via NANOG (Dec 27)
- Re: What do you consider acceptable packet / session modification for a network operator? Ca By via NANOG (Dec 27)
- Re: What do you consider acceptable packet / session modification for a network operator? William Herrin via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Marco Moock via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Saku Ytti via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Marco Moock via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Saku Ytti via NANOG (Dec 27)
- Re: What do you consider acceptable packet / session modification for a network operator? William Herrin via NANOG (Dec 27)
- Re: What do you consider acceptable packet / session modification for a network operator? nanog--- via NANOG (Dec 30)
- Re: What do you consider acceptable packet / session modification for a network operator? William Herrin via NANOG (Dec 30)
- Re: What do you consider acceptable packet / session modification for a network operator? Lukas Tribus via NANOG (Dec 30)
- Re: What do you consider acceptable packet / session modification for a network operator? Tom Beecher via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Marco Moock via NANOG (Dec 26)
- Re: What do you consider acceptable packet / session modification for a network operator? Jared Mauch via NANOG (Dec 26)