Date: Mon, 06 Nov 2017 12:30:19 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 103762] ppp(8): some tun interfaces with a mtu of 1500 while i should never exceed 1472 with ppp Message-ID: <bug-103762-8-42Ci3a153P@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-103762-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=103762 Eugene Grosbein <eugen@freebsd.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|freebsd-bugs@FreeBSD.org |eugen@freebsd.org CC| |eugen@freebsd.org Status|In Progress |Closed Resolution|--- |Works As Intended --- Comment #3 from Eugene Grosbein <eugen@freebsd.org> --- It is pretty normal for PPP protocol to negotiate mtu=1500 if both sides are configured so. Even PPPoE over non-jumbo ethernet frames with its own mtu=1500 can, nevertheless, negotiate and run with tunneling mtu=1500 if both peers support LCP multilink extensions over single link. It is just fine for some routers to keep persistent PPPoE connections, too. As ppp(8) manual page says, one should use "maximum" keyword to make hard upper limit on PPP mtu/mru values. -- You are receiving this mail because: You are the assignee for the bug.help
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