touch-packages team mailing list archive

[Bryan Quigley <bryan.quigley@xxxxxxxxxxxxx>]

The driver/hardware for rtl8139 seems to be limited at 4096:
bryan@desktop:/mnt/store/git/linux-git/drivers/net/ethernet/realtek$ grep 4096 *
8139cp.c:#define CP_MAX_MTU		4096
8139cp.c:	RxErrLong	= (1 << 21), /* Rx error, packet > 4096 bytes */

I wonder if ifupdown can handle this better and report that the MTU is
to high.. maybe even fallback to maximum and note it in the logs?

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https://bugs.launchpad.net/bugs/1430993

Title:
  MTU can't be higher than 4096

Status in ifupdown package in Ubuntu:
  New

Bug description:
  Using a KVM virtual  machine with 12  Ethernet controller: Realtek
  Semiconductor Co., Ltd. RTL-8100/8101L/8139 PCI Fast Ethernet Adapter
  (rev 20).

  Simple config:
  # The primary network interface
  auto eth0
  iface eth0 inet dhcp

  auto eth1
  iface eth1 inet static
  	address 192.168.200.128
  	netmask 255.255.255.0
  	mtu 4097

  While mtu of 4096 comes up fine.

  Mar 11 15:50:38 networkbase systemd[1]: Started User Manager for UID 1000.
  Mar 11 15:50:38 networkbase kernel: ifquery[914]: segfault at 0 ip 00000000004031c8 sp 00007ffc6057d870 error 4 in ifup[400000+d000]
  Mar 11 15:50:38 networkbase sh[777]: Segmentation fault (core dumped)
  .... Repeats a lot.....
  Mar 11 15:52:28 networkbase kernel: ifquery[1524]: segfault at 0 ip 00000000004031c8 sp 00007fffd0121230 error 4 in ifup[400000+d000]
  Mar 11 15:52:28 networkbase sh[777]: Segmentation fault (core dumped)
  Mar 11 15:52:29 networkbase systemd[1]: ifup-wait-all-auto.service start operation timed out. Terminating.
  Mar 11 15:52:29 networkbase systemd[1]: Failed to start Wait for all "auto" /etc/network/interfaces to be up for network-online.target.
  Mar 11 15:52:29 networkbase systemd[1]: Unit ifup-wait-all-auto.service entered failed state.
  Mar 11 15:52:29 networkbase systemd[1]: ifup-wait-all-auto.service failed.
  Mar 11 15:52:29 networkbase systemd[1]: Reached target Network is Online.

  ProblemType: Crash
  DistroRelease: Ubuntu 15.04
  Package: ifupdown 0.7.48.1ubuntu6
  ProcVersionSignature: Ubuntu 3.19.0-8.8-generic 3.19.1
  Uname: Linux 3.19.0-8-generic x86_64
  ApportVersion: 2.16.2-0ubuntu2
  Architecture: amd64
  Date: Wed Mar 11 15:46:11 2015
  ExecutablePath: /sbin/ifup
  InstallationDate: Installed on 2015-03-04 (6 days ago)
  InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Alpha amd64 (20150304)
  ProcCmdline: ifquery --state eth0 eth1
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
  SegvAnalysis: Skipped: missing required field "Disassembly"
  Signal: 11
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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