Ubuntu
netplan.io package

Issue with the tcp-segmentation-offload options in netplan.io yaml file

Bug #1979704 reported by Jim Pye
This bug report is a duplicate of:  Bug #1956264: Cannot set offload options to false. Edit Remove
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
netplan.io (Ubuntu)
New
Undecided
Unassigned

Bug Description

I have an issue with communications on an Intel NUC. After troubleshooting the issue it was resolved by disabling the tcp-segmentation-offload function.

I am having issues getting the tcp-segmentation-offload to stay off after a reboot.

I have added the documented options in netplan.io yaml file.

Details below...

Original setting displayed using ethtool -k eno1

# ethtool -k eno1
Features for eno1:
rx-checksumming: on
tx-checksumming: on
 tx-checksum-ipv4: off [fixed]
 tx-checksum-ip-generic: on
 tx-checksum-ipv6: off [fixed]
 tx-checksum-fcoe-crc: off [fixed]
 tx-checksum-sctp: off [fixed]
scatter-gather: on
 tx-scatter-gather: on
 tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
 tx-tcp-segmentation: on
 tx-tcp-ecn-segmentation: off [fixed]
 tx-tcp-mangleid-segmentation: off
 tx-tcp6-segmentation: on
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off [fixed]
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off [fixed]
.
.
.

I can use the following command as root to disable the function:
ethtool -K eno1 tso off

This gives the following:

# ethtool -k eno1
Features for eno1:
rx-checksumming: on
tx-checksumming: on
 tx-checksum-ipv4: off [fixed]
 tx-checksum-ip-generic: on
 tx-checksum-ipv6: off [fixed]
 tx-checksum-fcoe-crc: off [fixed]
 tx-checksum-sctp: off [fixed]
scatter-gather: on
 tx-scatter-gather: on
 tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: off
 tx-tcp-segmentation: off
 tx-tcp-ecn-segmentation: off [fixed]
 tx-tcp-mangleid-segmentation: off
 tx-tcp6-segmentation: off
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off [fixed]
rx-vlan-offload: on
.
.
.

However, if I set the following in the netplan yaml file:

network:
  version: 2
  renderer: networkd
  ethernets:
    eno1:
      match:
        macaddress: xx:xx:xx:xx:xx:xx
      dhcp4: no
      dhcp6: no
      tcp-segmentation-offload: false
      tcp6-segmentation-offload: false
  bridges:
    br0:
.
.
.

Used off, no and false as the bool value, all the same.

Either running the netplan try, or rebooting the PC, DOES NOT
set the tcp-segmentation-offloads to the off state.

After a reboot:

# ethtool -k eno1
Features for eno1:
rx-checksumming: on
tx-checksumming: on
 tx-checksum-ipv4: off [fixed]
 tx-checksum-ip-generic: on
 tx-checksum-ipv6: off [fixed]
 tx-checksum-fcoe-crc: off [fixed]
 tx-checksum-sctp: off [fixed]
scatter-gather: on
 tx-scatter-gather: on
 tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
 tx-tcp-segmentation: on
 tx-tcp-ecn-segmentation: off [fixed]
 tx-tcp-mangleid-segmentation: off
 tx-tcp6-segmentation: on
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off [fixed]
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off [fixed]
.
.
.

The documentation states this feature was available from version 0.104
and according to the package versioning I have that version.
Note, there is no version info running the netplan info command, Bug #1819833

# apt list netplan.io -a
Listing... Done
netplan.io/focal-updates,now 0.104-0ubuntu2~20.04.1 amd64 [installed,automatic]
netplan.io/focal 0.99-0ubuntu1 amd64

Gathering some information using:
ubuntu-debug netplan.io

ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: pass
Date: Fri Jun 24 13:27:19 2022
Dependencies:
 adduser 3.118ubuntu2
 apt 2.0.9
 apt-utils 2.0.9
 bzip2 1.0.8-2
 ca-certificates 20211016~20.04.1
 dbus 1.12.16-2ubuntu2.2
 debconf 1.5.73
 debconf-i18n 1.5.73
 dmsetup 2:1.02.167-1ubuntu1
 dpkg 1.19.7ubuntu3.2
 file 1:5.38-4
 gcc-10-base 10.3.0-1ubuntu1~20.04
 gir1.2-glib-2.0 1.64.1-1~ubuntu20.04.1
 gpgv 2.2.19-3ubuntu2.1
 iproute2 5.5.0-1ubuntu1
 libacl1 2.2.53-6
 libapparmor1 2.13.3-7ubuntu5.1
 libapt-pkg6.0 2.0.9
 libargon2-1 0~20171227-0.2
 libatm1 1:2.5.1-4
 libaudit-common 1:2.8.5-2ubuntu6
 libaudit1 1:2.8.5-2ubuntu6
 libblkid1 2.34-0.1ubuntu9.3
 libbsd0 0.10.0-1
 libbz2-1.0 1.0.8-2
 libc6 2.31-0ubuntu9.9
 libcap-ng0 0.7.9-2.1build1
 libcap2 1:2.32-1
 libcap2-bin 1:2.32-1
 libcrypt1 1:4.4.10-10ubuntu4
 libcryptsetup12 2:2.2.2-3ubuntu2.4
 libdb5.3 5.3.28+dfsg1-0.6ubuntu2
 libdbus-1-3 1.12.16-2ubuntu2.2
 libdevmapper1.02.1 2:1.02.167-1ubuntu1
 libelf1 0.176-1.1build1
 libexpat1 2.2.9-1ubuntu0.4
 libffi7 3.3-4
 libgcc-s1 10.3.0-1ubuntu1~20.04
 libgcrypt20 1.8.5-5ubuntu1.1
 libgirepository-1.0-1 1.64.1-1~ubuntu20.04.1
 libglib2.0-0 2.64.6-1~ubuntu20.04.4
 libglib2.0-data 2.64.6-1~ubuntu20.04.4
 libgmp10 2:6.2.0+dfsg-4
 libgnutls30 3.6.13-2ubuntu1.6
 libgpg-error0 1.37-1
 libgpm2 1.20.7-5
 libhogweed5 3.5.1+really3.5.1-2ubuntu0.2
 libicu66 66.1-2ubuntu2.1
 libidn2-0 2.2.0-2
 libip4tc2 1.8.4-3ubuntu2
 libjson-c4 0.13.1+dfsg-7ubuntu0.3
 libkmod2 27-1ubuntu2.1
 liblocale-gettext-perl 1.07-4
 liblz4-1 1.9.2-2ubuntu0.20.04.1
 liblzma5 5.2.4-1ubuntu1.1
 libmagic-mgc 1:5.38-4
 libmagic1 1:5.38-4
 libmnl0 1.0.4-2
 libmount1 2.34-0.1ubuntu9.3
 libmpdec2 2.4.2-3
 libncursesw6 6.2-0ubuntu2
 libnetplan0 0.104-0ubuntu2~20.04.1
 libnettle7 3.5.1+really3.5.1-2ubuntu0.2
 libp11-kit0 0.23.20-1ubuntu0.1
 libpam-cap 1:2.32-1
 libpam-modules 1.3.1-5ubuntu4.3
 libpam-modules-bin 1.3.1-5ubuntu4.3
 libpam-runtime 1.3.1-5ubuntu4.3
 libpam0g 1.3.1-5ubuntu4.3
 libpcre2-8-0 10.34-7
 libpcre3 2:8.39-12ubuntu0.1
 libpython3-stdlib 3.8.2-0ubuntu2
 libpython3.8-minimal 3.8.10-0ubuntu1~20.04.4
 libpython3.8-stdlib 3.8.10-0ubuntu1~20.04.4
 libreadline8 8.0-4
 libseccomp2 2.5.1-1ubuntu1~20.04.2
 libselinux1 3.0-1build2
 libsemanage-common 3.0-1build2
 libsemanage1 3.0-1build2
 libsepol1 3.0-1ubuntu0.1
 libsmartcols1 2.34-0.1ubuntu9.3
 libsqlite3-0 3.31.1-4ubuntu0.3
 libssl1.1 1.1.1f-1ubuntu2.15
 libstdc++6 10.3.0-1ubuntu1~20.04
 libsystemd0 245.4-4ubuntu3.17
 libtasn1-6 4.16.0-2
 libtext-charwidth-perl 0.04-10
 libtext-iconv-perl 1.7-7
 libtext-wrapi18n-perl 0.06-9
 libtinfo6 6.2-0ubuntu2
 libudev1 245.4-4ubuntu3.17
 libunistring2 0.9.10-2
 libuuid1 2.34-0.1ubuntu9.3
 libxml2 2.9.10+dfsg-5ubuntu0.20.04.3
 libxtables12 1.8.4-3ubuntu2
 libyaml-0-2 0.2.2-1
 libzstd1 1.4.4+dfsg-3ubuntu0.1
 login 1:4.8.1-1ubuntu5.20.04.2
 mime-support 3.64ubuntu1
 mount 2.34-0.1ubuntu9.3
 networkd-dispatcher 2.1-2~ubuntu20.04.3
 openssl 1.1.1f-1ubuntu2.15
 passwd 1:4.8.1-1ubuntu5.20.04.2
 perl-base 5.30.0-9ubuntu0.2
 python3 3.8.2-0ubuntu2
 python3-dbus 1.2.16-1build1
 python3-gi 3.36.0-1
 python3-minimal 3.8.2-0ubuntu2
 python3-netifaces 0.10.4-1ubuntu4
 python3-yaml 5.3.1-1ubuntu0.1
 python3.8 3.8.10-0ubuntu1~20.04.4
 python3.8-minimal 3.8.10-0ubuntu1~20.04.4
 readline-common 8.0-4
 shared-mime-info 1.15-1
 systemd 245.4-4ubuntu3.17
 systemd-timesyncd 245.4-4ubuntu3.17
 tar 1.30+dfsg-7ubuntu0.20.04.2
 tzdata 2022a-0ubuntu0.20.04
 ubuntu-keyring 2020.02.11.4
 util-linux 2.34-0.1ubuntu9.3
 uuid-runtime 2.34-0.1ubuntu9.3
 xdg-user-dirs 0.17-2ubuntu1
 xz-utils 5.2.4-1ubuntu1.1
 zlib1g 1:1.2.11.dfsg-2ubuntu1.3
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-05-10 (775 days ago)
InstallationMedia: Ubuntu-Server 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Package: netplan.io 0.104-0ubuntu2~20.04.1
PackageArchitecture: amd64
ProcCpuinfoMinimal:
 processor : 7
 vendor_id : GenuineIntel
 cpu family : 6
 model : 142
 model name : Intel(R) Core(TM) i7-8559U CPU @ 2.70GHz
 stepping : 10
 microcode : 0xf0
 cpu MHz : 4208.373
 cache size : 8192 KB
 physical id : 0
 siblings : 8
 core id : 3
 cpu cores : 4
 apicid : 7
 initial apicid : 7
 fpu : yes
 fpu_exception : yes
 cpuid level : 22
 wp : yes
 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d arch_capabilities
 bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit srbds mmio_stale_data
 bogomips : 5399.81
 clflush size : 64
 cache_alignment : 64
 address sizes : 39 bits physical, 48 bits virtual
 power management:
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 5.4.0-121.137-generic 5.4.189
SourcePackage: netplan.io
Tags: focal uec-images
Uname: Linux 5.4.0-121-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
_MarkForUpload: True

Let me know if you need more informtion.

Cheers
Jim

Revision history for this message
Lukas Märdian (slyon) wrote :

This was fixed upstream and is pending stable release update into Focal. Marking as duplicate.

https://github.com/canonical/netplan/pull/270
https://bugs.launchpad.net/netplan/+bug/1956264

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