A second pcap trace (two_packets.pcap) with two Client packets is attached to this ticket.
The following Client packets in the pcap trace demonstrate the issue exemplarily: - PADI frame (PPPoED; Client Ethernet Frame of 87 byte size); - a session Client packet (Ethernet frame of 473 Byte size). The both packets are large enough (>64 Bytes) and do not need to be padded. However a waste 14 byte padding is present after PPPoE payload in the both packets (Linux kernel bug). One can see the Problem while displaying and analyzing these packets in Wireshark. Evaluation of the Ubuntu (kernel) failure: 1. Such 14 Byte paddings included by Ubuntu kernel are waste and not required by the Ethernet standard. 2. Such incorrect Ethernet Frames from Client can be evaluated as "malformed" on NAS and thus can be silently dropped by NAS, resulting a critical connectivity issue in client PPPoE/PPP sessions. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1784684 Title: Waste padding after PPPoE payload To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784684/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
