Why I did it
SDK patches for iproute2 were added to SONiC tree as a temporary solution.
Now that SDK with the patches is available, I have removed the patches from SONiC tree and we consume them from SDK github during compilation.
How I did it
During build we download SDK iproute2 patches from SDK github (or from the URL provided by user if compiling SDK from sources) and apply them before compilation.
How to verify it
Compile and load on switch, verify interfaces network devices created successfully.
Verify LLDP shows connections to neighbors.
Verify ping between 2 hosts over 2 router ports is successful.
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