Fix dns forwarder update #9001

Job	Run time
build-cache	4m 3s
build-cache	4m 3s
test_client_on_docker	5m 15s
test_client_on_docker	5m 15s
test_management (386, sqlite)	11m 28s
test_management (386, sqlite)	2m 58s
test (386)	7m 25s
test (386)	7m 25s
test_management (386, postgres)	9m 12s
test_management (386, postgres)	9m 12s
benchmark (386, sqlite)	5m 40s
benchmark (386, sqlite)	5m 40s
test (amd64)	10m 30s
test (amd64)	10m 30s
test_management (amd64, sqlite)	11m 11s
test_management (amd64, sqlite)	11m 19s
benchmark (386, postgres)	7m 50s
benchmark (386, postgres)	7m 48s
test_management (amd64, postgres)	9m 19s
test_management (amd64, postgres)	9m 19s
benchmark (amd64, sqlite)	6m 4s
benchmark (amd64, sqlite)	6m 4s
benchmark (amd64, postgres)	8m 20s
benchmark (amd64, postgres)	8m 20s
	3h 4m 10s

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