Add UDP probes in anticipation of DNS monitoring #540

Job	Run time
Platform (x86_64) / Build	1m 17s
Platform (aarch64) / Build	5m 52s
Test (x86_64) / Kernel (amazonlinux2)	12m 56s
Test (x86_64) / Kernel (centos)	4m 24s
Test (x86_64) / Kernel (debian)	12m 55s
Test (x86_64) / Kernel (fedora)	6m 59s
Test (x86_64) / Kernel (mainline)	12m 57s
Test (x86_64) / Kernel (rocky)	4m 24s
Test (x86_64) / Kernel (ubuntu-aws)	12m 55s
Test (x86_64) / Kernel (ubuntu-azure)	12m 56s
Test (x86_64) / Kernel (ubuntu-gcp)	12m 59s
Test (x86_64) / Kernel (ubuntu-gke)	3m 52s
Test (x86_64) / Kernel (ubuntu-oem)	10m 45s
Test (x86_64) / Kernel (ubuntu-oracle)	12m 55s
Test (aarch64) / Kernel (amazonlinux2)	8m 4s
Test (aarch64) / Kernel (debian)	6m 56s
Test (aarch64) / Kernel (fedora)	8m 5s
Test (aarch64) / Kernel (mainline)	8m 6s
Test (aarch64) / Kernel (rocky)	5m 16s
Test (aarch64) / Kernel (ubuntu-aws)	8m 6s
Test (aarch64) / Kernel (ubuntu-azure)	8m 7s
Test (aarch64) / Kernel (ubuntu-gcp)	8m 5s
Test (aarch64) / Kernel (ubuntu-gke)	5m 47s
Test (aarch64) / Kernel (ubuntu-oracle)	8m 6s
CI Merge Auditor	1s
	3h 22m 45s

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