Add CI test for arp filter

Signed-off-by: Zhichuan Liang <gray.liang@isovalent.com>

.github/workflows/test.yml

@@ -114,7 +114,6 @@ jobs:
  expected-output-pattern: '1.1.1.1:80'
 
  - name: Test --filter-track-skb
- # DNAT
  uses: ./.github/actions/pwru-test
  with:
  test-name: filter-track-skb
@@ -125,6 +124,25 @@ jobs:
  curl -vvv -sS --fail --connect-timeout "1" -o /dev/null http://10.10.20.99:80 || true
  expected-output-pattern: '10.10.14.2:80'
 
+ - name: Test ARP filter
+ uses: ./.github/actions/pwru-test
+ with:
+ test-name: filter-arp
+ pwru-pcap-filter: 'arp and arp[7] = 1 and arp[24]= 169 and arp[25] = 254 and arp[26] = 0 and arp[27] = 1'
+ traffic-setup: |
+ ip net a pwru
+ ip l a pwru-veth type veth peer name pwru-veth-peer
+ ip l s pwru-veth-peer up
+ ip l s pwru-veth netns pwru
+ ip net e pwru ip l s pwru-veth up
+ ip r a 10.0.0.1 dev pwru-veth-peer
+ ip net e pwru ip a a 10.0.0.1 dev pwru-veth
+ ip net e pwru ip r a 169.254.0.1 dev pwru-veth
+ ip net e pwru ip r a default via 169.254.0.1 dev pwru-veth
+
+ ping -W1 -c1 10.0.0.1 || true
+ expected-output-pattern: 'arp_rcv'
+
  - name: Fetch artifacts
  if: ${{ !success() }}
  uses: cilium/little-vm-helper@908ab1ff8a596a03cd5221a1f8602dc44c3f906d