Date: Fri, 16 Sep 2022 18:44:03 +0200 From: <driesm@FreeBSD.org> To: <driesm@FreeBSD.org>, <freebsd-net@freebsd.org> Subject: RE: PPPoE (mpd5) IPv6 issues Message-ID: <007d01d8c9eb$87a45120$96ecf360$@FreeBSD.org> In-Reply-To: <004701d8c9ea$63e10090$2ba301b0$@FreeBSD.org> References: <004701d8c9ea$63e10090$2ba301b0$@FreeBSD.org>
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This is a multipart message in MIME format. ------=_NextPart_000_007E_01D8C9FC.4B2DBD60 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Hmm this mail was not finished, sorry about that. I will include the link that fell-off, <https://forum.netgate.com/topic/152935/ipv6-pppoe-mss-incorrect>; IPv6 PPPoE MSS incorrect | Netgate Forum Any help or pointers are greatly appreciated! PS: I use IPFW as my firewall, if this has anything to do with it. I do have a "reassemble all in" rule at the top of my ruleset From: driesm@FreeBSD.org <driesm@FreeBSD.org> Sent: Friday, 16 September 2022 18:36 To: freebsd-net@freebsd.org Subject: PPPoE (mpd5) IPv6 issues Hi freebsd-net! After a lot of google and tinkering I have hit a brick wall trying to set-up my new ISP which uses PPPoE. I'm at the point where IPv4 works fine 100% for all websites. But from the moment I turn on IPv6 all sites that prefer IPv6 stop working, I have confirmed that routing table etc all look good. So I'm more suspicious to a MTU / MSS issue. Although I cant find that much info about it. I have tcpmss fix turned on in my mpd.conf There seems to be a few sites like google.com and youtube.com that keep working. I have googled thoroughly but I was unable to find a fix for my problem. The one close to my issue seems this issue from 2020: ------=_NextPart_000_007E_01D8C9FC.4B2DBD60 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" = xmlns:o=3D"urn:schemas-microsoft-com:office:office" = xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" = xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta = http-equiv=3DContent-Type content=3D"text/html; = charset=3Dus-ascii"><meta name=3DGenerator content=3D"Microsoft Word 15 = (filtered medium)"><style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-fareast-language:EN-US;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} span.EmailStyle19 {mso-style-type:personal-reply; font-family:"Calibri",sans-serif; color:windowtext;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 72.0pt 72.0pt 72.0pt;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--></head><body lang=3DNL-BE = link=3D"#0563C1" vlink=3D"#954F72" style=3D'word-wrap:break-word'><div = class=3DWordSection1><p class=3DMsoNormal><span lang=3DEN-US>Hmm this = mail was not finished, sorry about that. <o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US>I will include the link that = fell-off, </span><a = href=3D"https://forum.netgate.com/topic/152935/ipv6-pppoe-mss-incorrect">= <span lang=3DEN-US>IPv6 PPPoE MSS incorrect | Netgate = Forum</span></a><span lang=3DEN-US><o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US>Any help or pointers are greatly = appreciated!<o:p></o:p></span></p><p class=3DMsoNormal><span = lang=3DEN-US><o:p> </o:p></span></p><p class=3DMsoNormal><span = lang=3DEN-US>PS: I use IPFW as my firewall, if this has anything to do = with it. I do have a “reassemble all in” rule at the top of = my ruleset<o:p></o:p></span></p><p class=3DMsoNormal><span = lang=3DEN-US><o:p> </o:p></span></p><div = style=3D'border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm = 4.0pt'><div><div style=3D'border:none;border-top:solid #E1E1E1 = 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span = lang=3DEN-US style=3D'mso-fareast-language:NL-BE'>From:</span></b><span = lang=3DEN-US style=3D'mso-fareast-language:NL-BE'> driesm@FreeBSD.org = <driesm@FreeBSD.org> <br><b>Sent:</b> Friday, 16 September 2022 = 18:36<br><b>To:</b> freebsd-net@freebsd.org<br><b>Subject:</b> PPPoE = (mpd5) IPv6 issues<o:p></o:p></span></p></div></div><p = class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p><p = class=3DMsoNormal>Hi freebsd-net!<o:p></o:p></p><p = class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal><span = lang=3DEN-US>After a lot of google and tinkering I have hit a brick wall = trying to set-up my new ISP which uses PPPoE.<o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US>I’m at the point where IPv4 = works fine 100% for all websites. But from the moment I turn on IPv6 all = sites that prefer IPv6 stop working, I have confirmed that routing table = etc all look good. So I’m more suspicious to a MTU / MSS = issue.<o:p></o:p></span></p><p class=3DMsoNormal><span = lang=3DEN-US>Although I cant find that much info about it. I have tcpmss = fix turned on in my mpd.conf<o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US>There seems to be a few sites like = google.com and youtube.com that keep working.<o:p></o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p><p = class=3DMsoNormal><span lang=3DEN-US>I have googled thoroughly but I was = unable to find a fix for my problem. The one close to my issue = seems this issue from = 2020:<o:p></o:p></span></p></div></div></body></html> ------=_NextPart_000_007E_01D8C9FC.4B2DBD60--
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