diff --git a/.ci/linux-build.sh b/.ci/linux-build.sh
index bb540703e..05b944ead 100755
--- a/.ci/linux-build.sh
+++ b/.ci/linux-build.sh
@@ -138,7 +138,8 @@ else
             [ "$(cat /proc/sys/vm/nr_hugepages)" = '1024' ]
             export DPDK_EAL_OPTIONS="--lcores 0@1,1@1,2@1"
         fi
-        $run_as_root make $testsuite TESTSUITEFLAGS=${JOBS} RECHECK=yes
+        $run_as_root make $testsuite TESTSUITEFLAGS="${JOBS} ${TEST_RANGE}" \
+                                     RECHECK=yes
     done
 fi
 
diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index acb57ac46..0b881ca91 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -76,7 +76,8 @@ jobs:
     env:
       dependencies: |
         automake libtool gcc bc libjemalloc2 libjemalloc-dev libssl-dev \
-        llvm-dev libnuma-dev libpcap-dev selinux-policy-dev libbpf-dev
+        llvm-dev libnuma-dev libpcap-dev selinux-policy-dev libbpf-dev \
+        lftp libreswan
       ASAN:        ${{ matrix.asan }}
       UBSAN:       ${{ matrix.ubsan }}
       CC:          ${{ matrix.compiler }}
@@ -87,6 +88,7 @@ jobs:
       OPTS:        ${{ matrix.opts }}
       STD:         ${{ matrix.std }}
       TESTSUITE:   ${{ matrix.testsuite }}
+      TEST_RANGE:  ${{ matrix.test_range }}
 
     name: linux ${{ join(matrix.*, ' ') }}
     runs-on: ubuntu-22.04
@@ -167,6 +169,13 @@ jobs:
           - compiler:     gcc
             testsuite:    check-ovsdb-cluster
 
+          - compiler:     gcc
+            testsuite:    check-kernel
+            test_range:   "-100"
+          - compiler:     gcc
+            testsuite:    check-kernel
+            test_range:   "100-"
+
     steps:
     - name: checkout
       uses: actions/checkout@v3
diff --git a/python/test_requirements.txt b/python/test_requirements.txt
index 6aaee13e3..c85ce41ad 100644
--- a/python/test_requirements.txt
+++ b/python/test_requirements.txt
@@ -1,3 +1,5 @@
-pytest
 netaddr
+pyftpdlib
 pyparsing
+pytest
+tftpy