Add UDP probes in anticipation of DNS monitoring #563

Job	Run time
Platform (aarch64) / Build	6m 4s
Platform (x86_64) / Build	1m 5s
Test (x86_64) / Kernel (amazonlinux2)	29m 23s
Test (x86_64) / Kernel (centos)	4m 4s
Test (x86_64) / Kernel (debian)	16m 50s
Test (x86_64) / Kernel (fedora)	7m 35s
Test (x86_64) / Kernel (mainline)	4h 24m 53s
Test (x86_64) / Kernel (rocky)	4m 38s
Test (x86_64) / Kernel (ubuntu-aws)	46m 38s
Test (x86_64) / Kernel (ubuntu-azure)	49m 15s
Test (x86_64) / Kernel (ubuntu-gcp)	35m 48s
Test (x86_64) / Kernel (ubuntu-gke)	4m 3s
Test (x86_64) / Kernel (ubuntu-oem)	11m 19s
Test (x86_64) / Kernel (ubuntu-oracle)	32m 2s
Test (aarch64) / Kernel (amazonlinux2)	40m 43s
Test (aarch64) / Kernel (debian)	6m 30s
Test (aarch64) / Kernel (fedora)	10m 42s
Test (aarch64) / Kernel (mainline)	46m 58s
Test (aarch64) / Kernel (rocky)	5m 51s
Test (aarch64) / Kernel (ubuntu-aws)	34m 6s
Test (aarch64) / Kernel (ubuntu-azure)	34m 33s
Test (aarch64) / Kernel (ubuntu-gcp)	10m 24s
Test (aarch64) / Kernel (ubuntu-gke)	5m 47s
Test (aarch64) / Kernel (ubuntu-oracle)	33m 10s
CI Merge Auditor	1s
	12h 22m 22s

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