fib_nexthop_nongw.sh from ubuntu_kernel_selftests failed on B-5.4

Looks like it's because the ip command does not has this "nexthop" object in Bionic.

We had a similar issue in the past with bug 1896448. We can likely do something similar, check if 'nexthop' is available and skip the test if not.

Proposed fix sent to the mailing list:

https://lists.ubuntu.com/archives/kernel-team/2022-October/133711.html

This bug is awaiting verification that the linux/5.4.0-132.148 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug was fixed in the package linux - 5.4.0-132.148

---------------
linux (5.4.0-132.148) focal; urgency=medium

  * CVE-2022-42719
    - mac80211: mlme: find auth challenge directly
    - wifi: mac80211: don't parse mbssid in assoc response
    - wifi: mac80211: fix MBSSID parsing use-after-free

  * iavf: SR-IOV VFs error with no traffic flow when MTU greater than 1500
    (LP: #1983656)
    - iavf: Fix set max MTU size with port VLAN and jumbo frames
    - i40e: Fix VF set max MTU size

  * fib_nexthop_nongw.sh from ubuntu_kernel_selftests failed on B-5.4
    (LP: #1990800)
    - SAUCE: selftests/net: skipping tests for older ip command releases

  * CVE-2022-29901
    - Revert "x86/speculation: Add RSB VM Exit protections"
    - Revert "x86/cpu: Add a steppings field to struct x86_cpu_id"
    - x86/devicetable: Move x86 specific macro out of generic code
    - x86/cpu: Add consistent CPU match macros
    - x86/cpu: Add a steppings field to struct x86_cpu_id
    - x86/kvm/vmx: Make noinstr clean
    - x86/cpufeatures: Move RETPOLINE flags to word 11
    - x86/bugs: Report AMD retbleed vulnerability
    - x86/bugs: Add AMD retbleed= boot parameter
    - x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value
    - x86/entry: Remove skip_r11rcx
    - x86/entry: Add kernel IBRS implementation
    - x86/bugs: Optimize SPEC_CTRL MSR writes
    - x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS
    - x86/bugs: Split spectre_v2_select_mitigation() and
      spectre_v2_user_select_mitigation()
    - x86/bugs: Report Intel retbleed vulnerability
    - intel_idle: Disable IBRS during long idle
    - x86/speculation: Change FILL_RETURN_BUFFER to work with objtool
    - x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n
    - x86/speculation: Fix firmware entry SPEC_CTRL handling
    - x86/speculation: Fix SPEC_CTRL write on SMT state change
    - x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit
    - x86/speculation: Remove x86_spec_ctrl_mask
    - KVM/VMX: Use TEST %REG,%REG instead of CMP $0,%REG in vmenter.S
    - KVM/nVMX: Use __vmx_vcpu_run in nested_vmx_check_vmentry_hw
    - KVM: VMX: Flatten __vmx_vcpu_run()
    - KVM: VMX: Convert launched argument to flags
    - KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS
    - KVM: VMX: Fix IBRS handling after vmexit
    - x86/speculation: Fill RSB on vmexit for IBRS
    - x86/common: Stamp out the stepping madness
    - x86/cpu/amd: Enumerate BTC_NO
    - x86/bugs: Add Cannon lake to RETBleed affected CPU list
    - x86/speculation: Disable RRSBA behavior
    - x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl_current
    - x86/bugs: Warn when "ibrs" mitigation is selected on Enhanced IBRS parts
    - x86/speculation: Add RSB VM Exit protections

  * ACPI: processor idle: Practically limit "Dummy wait" workaround to old Intel
    systems (LP: #1990985)
    - ACPI: processor_idle: Skip dummy wait if kernel is in guest
    - ACPI: processor idle: Practically limit "Dummy wait" workaround to old Intel
      systems

  * cgroup: all controllers mounted when using 'cgroup_no_v1=' (LP: #1988584)
    - cgroup-v1: add disabled controller check in cgroup1_p...

This bug is awaiting verification that the linux-azure/5.4.0-1100.106 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-xilinx-zynqmp/5.4.0-1020.24 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

Hints removed, thanks!