Add UDP probes in anticipation of DNS monitoring #550

Job	Run time
Platform (x86_64) / Build	1m 28s
Platform (aarch64) / Build	6m 17s
Test (x86_64) / Kernel (amazonlinux2)	27m 21s
Test (x86_64) / Kernel (centos)	4m 6s
Test (x86_64) / Kernel (debian)	15m 9s
Test (x86_64) / Kernel (fedora)	6m 51s
Test (x86_64) / Kernel (mainline)	40m 7s
Test (x86_64) / Kernel (rocky)	4m 27s
Test (x86_64) / Kernel (ubuntu-aws)	43m 19s
Test (x86_64) / Kernel (ubuntu-azure)	44m 16s
Test (x86_64) / Kernel (ubuntu-gcp)	32m 42s
Test (x86_64) / Kernel (ubuntu-gke)	3m 54s
Test (x86_64) / Kernel (ubuntu-oem)	10m 48s
Test (x86_64) / Kernel (ubuntu-oracle)	1h 31m 28s
Test (aarch64) / Kernel (amazonlinux2)	38m 52s
Test (aarch64) / Kernel (debian)	6m 20s
Test (aarch64) / Kernel (fedora)	10m 12s
Test (aarch64) / Kernel (mainline)	56m 40s
Test (aarch64) / Kernel (rocky)	5m 28s
Test (aarch64) / Kernel (ubuntu-aws)	40m 58s
Test (aarch64) / Kernel (ubuntu-azure)	40m 41s
Test (aarch64) / Kernel (ubuntu-gcp)	8m 6s
Test (aarch64) / Kernel (ubuntu-gke)	4m 50s
Test (aarch64) / Kernel (ubuntu-oracle)	31m 1s
CI Merge Auditor	1s
	9h 35m 22s

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