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connection-track ICMP traffic (#1602)
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Browse Source 
* connection-track ICMP and ICMPv6 traffic

* icmpv6 only has identifier on echo
This commit is contained in:
Jack Doan
2026-02-18 23:19:37 -06:00
committed by GitHub
parent 422fc2ad1e
commit 51308b845b
6 changed files with 216 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
outside_test.go
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@@ -155,6 +155,7 @@ func Test_newPacket_v6(t *testing.T) {
// next layer, missing length byte
err = newPacket(buffer.Bytes()[:49], true, p)
require.ErrorIs(t, err, ErrIPv6CouldNotFindPayload)
err = nil
// A good ICMP packet
ip = layers.IPv6{
@@ -165,20 +166,26 @@ func Test_newPacket_v6(t *testing.T) {
DstIP: net.IPv6linklocalallnodes,
}
icmp := layers.ICMPv6{}
buffer.Clear()
err = gopacket.SerializeLayers(buffer, opt, &ip, &icmp)
if err != nil {
panic(err)
icmp := layers.ICMPv6{
TypeCode: layers.ICMPv6TypeEchoRequest,
Checksum: 0x1234,
}
err = newPacket(buffer.Bytes(), true, p)
require.NoError(t, err)
buffer.Clear()
require.NoError(t, gopacket.SerializeLayers(buffer, opt, &ip, &icmp))
require.Error(t, newPacket(buffer.Bytes(), true, p))
buffer.Clear()
echo := layers.ICMPv6Echo{
Identifier: 0xabcd,
SeqNumber: 1234,
}
require.NoError(t, gopacket.SerializeLayers(buffer, opt, &ip, &icmp, &echo))
require.NoError(t, newPacket(buffer.Bytes(), true, p))
assert.Equal(t, uint8(layers.IPProtocolICMPv6), p.Protocol)
assert.Equal(t, netip.MustParseAddr("ff02::2"), p.RemoteAddr)
assert.Equal(t, netip.MustParseAddr("ff02::1"), p.LocalAddr)
assert.Equal(t, uint16(0), p.RemotePort)
assert.Equal(t, uint16(0xabcd), p.RemotePort)
assert.Equal(t, uint16(0), p.LocalPort)
assert.False(t, p.Fragment)