[Bug 200860] Failed do-not-fragment ping when using PPPoE over FTTX connection
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Sun Jun 14 20:50:49 UTC 2015
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200860
Bug ID: 200860
Summary: Failed do-not-fragment ping when using PPPoE over FTTX
connection
Product: Ports & Packages
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: Individual Port(s)
Assignee: freebsd-ports-bugs at FreeBSD.org
Reporter: moj0 at gmx.com
Issue:
ping -D -s 1472 yahoo.com
PING yahoo.com (98.138.253.109): 1472 data bytes
36 bytes from localhost (127.0.0.1): frag needed and DF set (MTU 1492)
Vr HL TOS Len ID Flg off TTL Pro cks Src Dst
4 5 00 05dc bc40 0 0000 40 01 3ec0 2.97.192.51 98.138.253.109
36 bytes from localhost (127.0.0.1): frag needed and DF set (MTU 1492)
Vr HL TOS Len ID Flg off TTL Pro cks Src Dst
4 5 00 05dc d846 0 0000 40 01 0000 2.97.192.51 98.138.253.109
36 bytes from localhost (127.0.0.1): frag needed and DF set (MTU 1492)
Vr HL TOS Len ID Flg off TTL Pro cks Src Dst
4 5 00 05dc f4f7 0 0000 40 01 3ec0 2.97.192.51 98.138.253.109
Expected behavior:
ping -D -s 1472 www.dslreports.com
PING www.dslreports.com (64.91.255.98): 1472 data bytes
1480 bytes from 64.91.255.98: icmp_seq=0 ttl=47 time=122.827 ms
1480 bytes from 64.91.255.98: icmp_seq=1 ttl=47 time=123.011 ms
1480 bytes from 64.91.255.98: icmp_seq=2 ttl=47 time=122.368 ms
1480 bytes from 64.91.255.98: icmp_seq=3 ttl=47 time=122.715 ms
1480 bytes from 64.91.255.98: icmp_seq=4 ttl=47 time=122.640 ms
The assumption is that the WAN port is gigabit capable, and internet connection
is PPPoE over FTTX. PPPoE needs updating from legacy copper DSL/cable to modern
fiber optical, with the RFC 4638 extension. FTTX ISP equipment from the likes
of Cisco, Juniper and Huawei support this.
https://tools.ietf.org/html/rfc4638
http://comments.gmane.org/gmane.os.openbsd.tech/27554
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