diff --git a/pkg/slayers/scion.go b/pkg/slayers/scion.go
index 7e24772f14..66ff20c755 100644
--- a/pkg/slayers/scion.go
+++ b/pkg/slayers/scion.go
@@ -394,15 +394,16 @@ func ParseAddr(addrType AddrType, raw []byte) (addr.Host, error) {
 func PackAddr(host addr.Host) (AddrType, []byte, error) {
 	switch host.Type() {
 	case addr.HostTypeIP:
-		ip := host.IP()
+		// The IP is potentially IPv4-in-IPv6. We need to unmap it to ensure
+		// we only have true IPv4 or IPv6 addresses.
+		ip := host.IP().Unmap()
 		if !ip.IsValid() {
 			break
 		}
-		t := T4Ip
 		if ip.Is6() {
-			t = T16Ip
+			return T16Ip, ip.AsSlice(), nil
 		}
-		return t, ip.AsSlice(), nil
+		return T4Ip, ip.AsSlice(), nil
 	case addr.HostTypeSVC:
 		raw := make([]byte, 4)
 		binary.BigEndian.PutUint16(raw, uint16(host.SVC()))
diff --git a/pkg/slayers/scion_test.go b/pkg/slayers/scion_test.go
index 06d4967551..a794587614 100644
--- a/pkg/slayers/scion_test.go
+++ b/pkg/slayers/scion_test.go
@@ -33,10 +33,11 @@ import (
 )
 
 var (
-	ip6Addr = addr.MustParseHost("2001:db8::68")
-	ip4Addr = addr.MustParseHost("10.0.0.100")
-	svcAddr = addr.MustParseHost("Wildcard")
-	rawPath = func() []byte {
+	ip6Addr    = addr.MustParseHost("2001:db8::68")
+	ip4Addr    = addr.MustParseHost("10.0.0.100")
+	ip4in6Addr = addr.MustParseHost("::ffff:10.0.0.100")
+	svcAddr    = addr.MustParseHost("Wildcard")
+	rawPath    = func() []byte {
 		return []byte("\x00\x00\x20\x80\x00\x00\x01\x11\x00\x00\x01\x00\x01\x00\x02\x22\x00" +
 			"\x00\x01\x00\x00\x3f\x00\x01\x00\x00\x01\x02\x03\x04\x05\x06\x00\x3f\x00\x03\x00" +
 			"\x02\x01\x02\x03\x04\x05\x06\x00\x3f\x00\x00\x00\x02\x01\x02\x03\x04\x05\x06\x00" +
@@ -311,6 +312,12 @@ func TestPackAddr(t *testing.T) {
 			rawAddr:   ip4Addr.IP().AsSlice(),
 			errorFunc: assert.NoError,
 		},
+		"pack IPv4-mapped IPv6": {
+			addr:      ip4in6Addr,
+			addrType:  slayers.T4Ip,
+			rawAddr:   []byte{0xa, 0x0, 0x0, 0x64},
+			errorFunc: assert.NoError,
+		},
 		"pack IPv6": {
 			addr:      ip6Addr,
 			addrType:  slayers.T16Ip,